ob_parameter_seed.ipp

/**
 * Copyright (c) 2021 OceanBase
 * OceanBase CE is licensed under Mulan PubL v2.
 * You can use this software according to the terms and conditions of the Mulan PubL v2.
 * You may obtain a copy of Mulan PubL v2 at:
 *          http://license.coscl.org.cn/MulanPubL-2.0
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PubL v2 for more details.
 */

#include "share/parameter/ob_parameter_macro.h"

#ifndef OB_CLUSTER_PARAMETER
#define OB_CLUSTER_PARAMETER(args...)
#endif

#ifndef OB_TENANT_PARAMETER
#define OB_TENANT_PARAMETER(args...)
#endif

//// sstable config
// "/ob/storage/path/dir" means use local dir
// "ofs://0.0.0.0,1.1.1.1,2.2.2.2/dir" means use ofs dir
DEF_STR(data_dir, OB_CLUSTER_PARAMETER, "store", "the directory for the data file",
        ObParameterAttr(Section::SSTABLE, Source::DEFAULT, EditLevel::READONLY));
DEF_STR(redundancy_level, OB_CLUSTER_PARAMETER, "NORMAL",
        "EXTERNAL: use extrernal redundancy"
        "NORMAL: tolerate one disk failure"
        "HIGH: tolerate two disk failure if disk count is enough",
        ObParameterAttr(Section::SSTABLE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE))
// background information about disk space configuration
// https://yuque.antfin-inc.com/ob/rootservice/buzmfz
DEF_CAP(datafile_size, OB_CLUSTER_PARAMETER, "0", "[0M,)", "size of the data file. Range: [0, +∞)",
        ObParameterAttr(Section::SSTABLE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(datafile_disk_percentage, OB_CLUSTER_PARAMETER, "0", "[0,99]",
        "the percentage of disk space used by the data files. Range: [0,99] in integer",
        ObParameterAttr(Section::SSTABLE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(memory_reserved, OB_CLUSTER_PARAMETER, "500M", "[10M,)",
        "the size of the system memory reserved for emergency internal use. "
        "Range: [10M, total size of memory]",
        ObParameterAttr(Section::SSTABLE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//// observer config
DEF_STR_LIST(config_additional_dir, OB_CLUSTER_PARAMETER, "etc2;etc3", "additional directories of configure file",
             ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(leak_mod_to_check, OB_CLUSTER_PARAMETER, "NONE", "the name of the module under memory leak checks",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(rpc_port, OB_CLUSTER_PARAMETER, "2882", "(1024,65536)",
        "the port number for RPC protocol. Range: (1024. 65536) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(mysql_port, OB_CLUSTER_PARAMETER, "2881", "(1024,65536)",
        "port number for mysql connection. Range: (1024, 65536) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(devname, OB_CLUSTER_PARAMETER, "bond0", "name of network adapter",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(zone, OB_CLUSTER_PARAMETER, "", "specifies the zone name",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(internal_sql_execute_timeout, OB_CLUSTER_PARAMETER, "30s", "[1000us, 1h]",
         "the number of microseconds an internal DML request is permitted to "
         "execute before it is terminated. Range: [1000us, 1h]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,64]",
        "the number of rpc/mysql I/O threads for Libeasy. Range: [0, 64] in integer, 0 stands for max(6, CPU_NUM/8)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_INT(high_priority_net_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,64]",
        "the number of rpc I/O threads for high priority messages, 0 means set off. Range: [0, 64] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_INT(rdma_io_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,8]",
        "the number of RDMA I/O threads for Libreasy. Range: [0, 8] in integer, 0 stands for RDMA being disabled.",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_INT(tenant_task_queue_size, OB_CLUSTER_PARAMETER, "65536", "[1024,]",
        "the size of the task queue for each tenant. Range: [1024,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
_DEF_PARAMETER_SCOPE_CHECKER_EASY(private, Capacity, memory_limit, OB_CLUSTER_PARAMETER, "0",
        common::ObConfigMemoryLimitChecker, "[0M,)",
        "the size of the memory reserved for internal use(for testing purpose), 0 means follow memory_limit_percentage. Range: 0, [4G,).",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(rootservice_memory_limit, OB_CLUSTER_PARAMETER, "2G", "[2G,)",
        "max memory size which can be used by rs tenant The default value is 2G. Range: [2G,)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
_DEF_PARAMETER_SCOPE_RANGE_EASY(private, Capacity, system_memory, OB_CLUSTER_PARAMETER, "0M", "[0M,)",
        "the memory reserved for internal use which cannot be allocated to any outer-tenant, "
        "and should be determined to guarantee every server functions normally. Range: [0M,)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(cpu_count, OB_CLUSTER_PARAMETER, "0", "[0,]",
        "the number of CPU\\'s in the system. "
        "If this parameter is set to zero, the number will be set according to sysconf; "
        "otherwise, this parameter is used. Range: [0,+∞) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(trace_log_sampling_interval, OB_CLUSTER_PARAMETER, "10ms", "[0ms,]",
        "the time interval for periodically printing log info in trace log. "
        "When force_trace_log is set to FALSE, "
        "for each time interval specifies by sampling_trace_log_interval, "
        "logging info regarding ‘slow query’ and ‘white list’ will be printed out. "
        "Range: [0ms,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(trace_log_slow_query_watermark, OB_CLUSTER_PARAMETER, "1s", "[1ms,]",
        "the threshold of execution time (in milliseconds) of a query beyond "
        "which it is considered to be a \\'slow query\\'. Range: [1ms,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_record_trace_log, OB_CLUSTER_PARAMETER, "True",
         "specifies whether to always record the trace log. The default value is True.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(system_trace_level, OB_CLUSTER_PARAMETER, "1", "[0,2]",
        "system trace log level, 0:none, 1:standard, 2:debug. "
        "The default log level for trace log is 1",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(max_string_print_length, OB_CLUSTER_PARAMETER, "500", "[0,]",
        "truncate very long string when printing to log file. Range:[0,]",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_sql_audit, OB_CLUSTER_PARAMETER, "true",
         "specifies whether SQL audit is turned on. "
         "The default value is TRUE. Value: TRUE: turned on FALSE: turned off",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_record_trace_id, OB_CLUSTER_PARAMETER, "true",
         "specifies whether record app trace id is turned on.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_rich_error_msg, OB_CLUSTER_PARAMETER, "false",
         "specifies whether add ip:port, time and trace id to user error message. "
         "The default value is FALSE.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(debug_sync_timeout, OB_CLUSTER_PARAMETER, "0", "[0,)",
         "Enable the debug sync facility and "
         "optionally specify a default wait timeout in micro seconds. "
         "A zero value keeps the facility disabled, Range: [0, +∞]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(dead_socket_detection_timeout, OB_CLUSTER_PARAMETER, "3s", "[0s,2h]",
         "specify a tcp_user_timeout for RFC5482. "
         "A zero value makes the option disabled, Range: [0, 2h]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_perf_event, OB_CLUSTER_PARAMETER, "True",
         "specifies whether to enable perf event feature. The default value is True.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_upgrade_mode, OB_CLUSTER_PARAMETER, "False",
         "specifies whether upgrade mode is turned on. "
         "If turned on, daily merger and balancer will be disabled. "
         "Value: True: turned on; False: turned off;",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(schema_history_expire_time, OB_CLUSTER_PARAMETER, "7d", "[1m, 30d]",
         "the hour of expire time for schema history, from 1hour to 30days, "
         "with default 7days. Range: [1h, 30d]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_STR_WITH_CHECKER(default_compress_func, OB_CLUSTER_PARAMETER, "zstd_1.3.8",
                     common::ObConfigCompressFuncChecker,
                     "default compress function name for create new table, "
                     "values: none, lz4_1.0, snappy_1.0, zlib_1.0, zstd_1.0, zstd_1.3.8",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_STR_WITH_CHECKER(default_row_format, OB_CLUSTER_PARAMETER, "dynamic",
                     common::ObConfigRowFormatChecker,
                     "default row format in mysql mode",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_STR_WITH_CHECKER(default_compress, OB_CLUSTER_PARAMETER, "archive",
                     common::ObConfigCompressOptionChecker,
                     "default compress strategy for create new table within oracle mode",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(weak_read_version_refresh_interval, OB_CLUSTER_PARAMETER, "100ms", "[50ms,)",
         "the time interval to refresh cluster weak read version "
         "Range: [50ms, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// for observer, root_server_list in format ip1:rpc_port1:sql_port1;ip2:rpc_port2:sql_port2
DEF_STR_LIST(rootservice_list, OB_CLUSTER_PARAMETER, "",
             "a list of servers against which election candidate is checked for validation",
             ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(cluster, OB_CLUSTER_PARAMETER, "obcluster", "Name of the cluster",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
// drc复制的时候，使用的ob_org_cluster_id的范围是[0xffff0000,0xffffffff]，
// 而用户的sql写入到clog中的cluster_id的范围必须不能在[0xffff0000,0xffffffff]之内，
// 用户的sql写入到clog中的cluster_id就是由系统配置项中的cluster_id决定的，
// 因此这里的系统配置项中的cluster_id的范围为[1, 0xffff0000 - 1]，也就是[1,4294901759]。
// cluser_id的默认值为0，不在它的值域[1,4294901759]之内，也就是说，
// 在检查ObServerConfig对象的合法性之前必须要为cluster_id赋一个[1,4294901759]范围内的值。
DEF_INT(cluster_id, OB_CLUSTER_PARAMETER, "0", "[1,4294901759]", "ID of the cluster",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(obconfig_url, OB_CLUSTER_PARAMETER, "", "URL for OBConfig service",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_LOG_LEVEL(syslog_level, OB_CLUSTER_PARAMETER, "INFO", "specifies the current level of logging. There are DEBUG, TRACE, INFO, WARN, USER_ERR, ERROR, six different log levels.",
              ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(syslog_io_bandwidth_limit, OB_CLUSTER_PARAMETER, "30MB",
        "Syslog IO bandwidth limitation, exceeding syslog would be truncated. Use 0 to disable ERROR log.",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(max_syslog_file_count, OB_CLUSTER_PARAMETER, "0", "[0,]",
        "specifies the maximum number of the log files "
        "that can co-exist before the log file recycling kicks in. "
        "Each log file can occupy at most 256MB disk space. "
        "When this value is set to 0, no log file will be removed. Range: [0, +∞) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_async_syslog, OB_CLUSTER_PARAMETER, "True",
         "specifies whether use async log for observer.log, elec.log and rs.log",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_syslog_wf, OB_CLUSTER_PARAMETER, "True",
         "specifies whether any log message with a log level higher than \\'WARN\\' "
         "would be printed into a separate file with a suffix of \\'wf\\'",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_syslog_recycle, OB_CLUSTER_PARAMETER, "False",
         "specifies whether log file recycling is turned on. "
         "Value: True：turned on; False: turned off",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(memory_limit_percentage, OB_CLUSTER_PARAMETER, "80", "[10, 90]",
        "the size of the memory reserved for internal use(for testing purpose). Range: [10, 90]",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(cache_wash_threshold, OB_CLUSTER_PARAMETER, "4GB", "[0B,]",
        "size of remaining memory at which cache eviction will be triggered. Range: [0,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(memory_chunk_cache_size, OB_CLUSTER_PARAMETER, "0M", "[0M,]", "the maximum size of memory cached by memory chunk cache. Range: [0M,], 0 stands for adaptive",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(autoinc_cache_refresh_interval, OB_CLUSTER_PARAMETER, "3600s", "[100ms,]",
         "auto-increment service cache refresh sync_value in this interval, "
         "with default 3600s. Range: [100ms, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_sql_operator_dump, OB_CLUSTER_PARAMETER, "True", "specifies whether sql operators "
         "(sort/hash join/material/window function/interm result/...) allowed to write to disk",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(_chunk_row_store_mem_limit, OB_CLUSTER_PARAMETER, "0B", "[0,]",
        "the maximum size of memory used by ChunkRowStore, 0 means follow operator's setting. Range: [0, +∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(tableapi_transport_compress_func, OB_CLUSTER_PARAMETER, "none",
                     common::ObConfigCompressFuncChecker,
                     "compressor used for tableAPI query result. Values: none, lz4_1.0, snappy_1.0, zlib_1.0, zstd_1.0 zstd 1.3.8",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(_sort_area_size, OB_TENANT_PARAMETER, "128M", "[2M,]",
        "size of maximum memory that could be used by SORT. Range: [2M,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(_hash_area_size, OB_TENANT_PARAMETER, "100M", "[4M,]",
        "size of maximum memory that could be used by HASH JOIN. Range: [4M,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//https://yuque.antfin-inc.com/ob/product_functionality_review/gxmqcg
DEF_BOOL(_enable_partition_level_retry, OB_CLUSTER_PARAMETER, "True",
         "specifies whether allow the partition level retry when the leader changes",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
//https://yuque.antfin-inc.com/ob/product_functionality_review/zlp56c
DEF_INT_WITH_CHECKER(_enable_defensive_check, OB_CLUSTER_PARAMETER, "1",
                     common::ObConfigEnableDefensiveChecker,
                     "specifies whether allow to do some defensive checks when the query is executed, "
                     "0 means defensive check is disabled, "
                     "1 means normal defensive check is enabled, "
                     "2 means more strict defensive check is enabled, such as check partition id validity",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//// tenant config
DEF_TIME_WITH_CHECKER(max_stale_time_for_weak_consistency, OB_TENANT_PARAMETER, "5s",
                      common::ObConfigStaleTimeChecker,
                      "[5s,)",
                      "the max data stale time that cluster weak read version behind current timestamp,"
                      "no smaller than weak_read_version_refresh_interval, range: [5s, +∞)",
                      ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_monotonic_weak_read, OB_TENANT_PARAMETER, "false",
         "specifies observer supportting atomicity and monotonic order read",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_DBL(tenant_cpu_variation_per_server, OB_CLUSTER_PARAMETER, "50", "[0,100]",
        "the percentage variation for any tenant\\'s CPU quota allocation on each observer. "
        "The default value is 50(%). Range: [0, 100] in percentage",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_DBL(server_cpu_quota_min, OB_CLUSTER_PARAMETER, "1", "[1,16]",
        "the number of minimal vCPUs allocated to the server tenant"
        "(a special internal tenant that exists on every observer). Range: [1, 16]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_DBL(server_cpu_quota_max, OB_CLUSTER_PARAMETER, "1", "[1,16]",
        "the number of maximal vCPUs allocated to the server tenant"
        "(a special internal tenant that exists on every observer). Range: [1, 16]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_DBL(location_cache_cpu_quota, OB_CLUSTER_PARAMETER, "5", "[0,10]",
        "the number of vCPUs allocated for the requests regarding location "
        "info of the core tables. Range: [0,10] in integer",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(workers_per_cpu_quota, OB_CLUSTER_PARAMETER, "10", "[2,20]",
        "the ratio(integer) between the number of system allocated workers vs "
        "the maximum number of threads that can be scheduled concurrently. Range: [2, 20]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_DBL(large_query_worker_percentage, OB_CLUSTER_PARAMETER, "30", "[0,100]",
        "the percentage of the workers reserved to serve large query request. "
        "Range: [0, 100] in percentage",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE))
DEF_TIME(large_query_threshold, OB_CLUSTER_PARAMETER, "5s", "[1ms,)",
         "threshold for execution time beyond "
         "which a request may be paused and rescheduled as a \\'large request\\'. Range: [1ms, +∞)",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_ob_max_thread_num, OB_CLUSTER_PARAMETER, "0", "[0,10000)",
         "ob max thread number "
         "upper limit of observer thread count. Range: [0, 10000), 0 means no limit.",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_DBL(cpu_quota_concurrency, OB_TENANT_PARAMETER, "4", "[1,10]",
        "max allowed concurrency for 1 CPU quota. Range: [1,10]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_DBL(token_reserved_percentage, OB_CLUSTER_PARAMETER,
        "30", "[0,100]",
        "specifies the amount of token increase allocated to a tenant based on "
        "his consumption from the last round (without exceeding his upper limit). "
        "Range: [0, 100] in percentage",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(global_write_halt_residual_memory, OB_CLUSTER_PARAMETER, "30", "(0, 100)",
        "disable write to memstore when observer memstore free memory(plus memory hold by blockcache) lower than this limit, Range: (0, 100)"
        "limit calc by (memory_limit - system_memory) * global_write_halt_residual_memory/100",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(px_workers_per_cpu_quota, OB_CLUSTER_PARAMETER, "10", "[0,20]",
        "the ratio(integer) between the number of system allocated px workers vs "
        "the maximum number of threads that can be scheduled concurrently. Range: [0, 20]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(undo_retention, OB_TENANT_PARAMETER, "1800", "[0, 4294967295]",
        "the low threshold value of undo retention. The system retains undo for at least the time specified in this config. Range: [0, 4294967295]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_rowsets_enabled, OB_TENANT_PARAMETER, "True",
         "specifies whether vectorized sql execution engine is activated",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_rowsets_target_maxsize, OB_TENANT_PARAMETER, "524288", "[262144, 8388608]",
        "the size of the memory reserved for vectorized sql engine. Range: [262144, 8388608]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_rowsets_max_rows, OB_TENANT_PARAMETER, "256", "[0, 65535]",
        "the row number processed by vectorized sql engine within one batch. Range: [0, 65535]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(_ctx_memory_limit, OB_TENANT_PARAMETER, "",
        common::ObCtxMemoryLimitChecker,
        "specifies tenant ctx memory limit.",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_convert_real_to_decimal, OB_TENANT_PARAMETER, "False",
         "specifies whether convert column type float(M,D), double(M,D) to decimal(M,D) in DDL",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));


// tenant memtable consumption related
DEF_INT(memstore_limit_percentage, OB_CLUSTER_PARAMETER, "50", "(0, 100)",
        "used in calculating the value of MEMSTORE_LIMIT parameter: "
        "memstore_limit_percentage = memstore_limit / memory_size，memory_size, "
        "where MEMORY_SIZE is determined when the tenant is created. Range: (0, 100)",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(freeze_trigger_percentage, OB_TENANT_PARAMETER, "20", "(0, 100)",
        "the threshold of the size of the mem store when freeze will be triggered. Rang:(0，100)",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(writing_throttling_trigger_percentage, OB_TENANT_PARAMETER, "60", "(0, 100]",
          "the threshold of the size of the mem store when writing_limit will be triggered. Rang:(0，100]. setting 100 means turn off writing limit",
          ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(writing_throttling_maximum_duration, OB_TENANT_PARAMETER, "2h", "[1s, 3d]",
          "maximum duration of writting throttling(in minutes), max value is 3 days",
          ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(plan_cache_high_watermark, OB_CLUSTER_PARAMETER, "2000M",
        "(don't use now) memory usage at which plan cache eviction will be trigger immediately. Range: [0, +∞)",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(plan_cache_low_watermark, OB_CLUSTER_PARAMETER, "1500M",
        "(don't use now) memory usage at which plan cache eviction will be stopped. "
        "Range: [0, plan_cache_high_watermark)",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(plan_cache_evict_interval, OB_CLUSTER_PARAMETER, "1s", "[0s,)",
         "time interval for periodic plan cache eviction. Range: [0s, +∞)",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(max_px_worker_count, OB_CLUSTER_PARAMETER, "64", "[0,65535]",
        "maximum parallel execution worker count can be used for all parallel requests. "
        "Range:[0, 65535]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(default_progressive_merge_num, OB_TENANT_PARAMETER, "0", "[0,)",
         "default progressive_merge_num when tenant create table"
         "Range:[0,)",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(_parallel_min_message_pool, OB_TENANT_PARAMETER, "64M", "[16M, 8G]",
        "DTL message buffer pool reserve the mininum size after extend the size. Range: [16M,8G]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_DBL(_parallel_server_sleep_time, OB_TENANT_PARAMETER, "1", "[0, 2000]",
        "sleep time between get channel data in millisecond. Range: [0, 2000]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_DBL(_px_max_message_pool_pct, OB_TENANT_PARAMETER, "40", "[0,90]",
        "The maxinum percent of tenant memory that DTL message buffer pool can alloc memory. Range: [0,90]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_px_message_compression, OB_TENANT_PARAMETER, "True",
        "Enable DTL send message with compression"
        "Value: True: enable compression False: disable compression",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_px_chunklist_count_ratio, OB_CLUSTER_PARAMETER, "1", "[1, 128]",
        "the ratio of the dtl buffer manager list. Range: [1, 128]",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_sqlexec_disable_hash_based_distagg_tiv, OB_TENANT_PARAMETER, "False",
         "disable hash based distinct aggregation in the second stage of three stage aggregation for gby queries"
         "Value:  True:turned on  False: turned off",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_force_hash_groupby_dump, OB_TENANT_PARAMETER, "False",
         "force hash groupby to dump"
         "Value:  True:turned on  False: turned off",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_force_hash_join_spill, OB_TENANT_PARAMETER, "False",
         "force hash join to dump after get all build hash table "
         "Value:  True:turned on  False: turned off",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_enable_hash_join_hasher, OB_TENANT_PARAMETER, "1", "[1, 7]",
         "which hash function to choose for hash join "
         "1: murmurhash, 2: crc, 4: xxhash",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_enable_hash_join_processor, OB_TENANT_PARAMETER, "7", "[1, 7]",
         "which path to process for hash join, default 7 to auto choose "
         "1: nest loop, 2: recursive, 4: in-memory",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_pushdown_storage_level, OB_TENANT_PARAMETER, "3", "[0, 3]",
        "the level of storage pushdown. Range: [0, 3] "
        "0: disabled, 1:blockscan, 2: blockscan & filter, 3: blockscan & filter & aggregate",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_WORK_AREA_POLICY(workarea_size_policy, OB_TENANT_PARAMETER, "AUTO", "policy used to size SQL working areas (MANUAL/AUTO)",
              ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_temporary_file_io_area_size, OB_TENANT_PARAMETER, "1", "[0, 50)",
         "memory buffer size of temporary file, as a percentage of total tenant memory. "
         "Range: [0, 50), percentage",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_storage_meta_memory_limit_percentage, OB_TENANT_PARAMETER, "20", "[0, 50)",
         "maximum memory for storage meta, as a percentage of total tenant memory. "
         "Range: [0, 50), percentage, 0 means no limit to storage meta memory",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
////  rootservice config
DEF_TIME(lease_time, OB_CLUSTER_PARAMETER, "10s", "[1s, 5m]",
         "Lease for current heartbeat. If the root server does not received any heartbeat "
         "from an observer in lease_time seconds, that observer is considered to be offline. "
         "Not recommended for modification. Range: [1s, 5m]",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(rootservice_async_task_thread_count, OB_CLUSTER_PARAMETER, "4", "[1,10]",
        "maximum of threads allowed for executing asynchronous task at rootserver. "
        "Range: [1, 10]",
        ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(rootservice_async_task_queue_size, OB_CLUSTER_PARAMETER, "16384", "[8,131072]",
        "the size of the queue for all asynchronous tasks at rootserver. "
        "Range: [8, 131072] in integer",
        ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_sys_table_ddl, OB_CLUSTER_PARAMETER, "False",
         "specifies whether a \\'system\\' table is allowed be to created manually. "
         "Value: True: allowed; False: not allowed",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(server_permanent_offline_time, OB_CLUSTER_PARAMETER, "3600s", "[20s,)",
         "the time interval between any two heartbeats beyond "
         "which a server is considered to be \\'permanently\\' offline. Range: [20s,+∞)",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(migration_disable_time, OB_CLUSTER_PARAMETER, "3600s", "[1s,)",
         "the duration in which the observer stays in the \\'block_migrate_in\\' status, "
         "which means it is not allowed to migrate into the server. Range: [1s, +∞)",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(server_check_interval, OB_CLUSTER_PARAMETER, "30s", "[1s,)",
         "the time interval between schedules of a task "
         "that examines the __all_server table. Range: [1s, +∞)",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(rootservice_ready_check_interval, OB_CLUSTER_PARAMETER, "3s", "[100000us, 1m]",
         "the interval between the schedule of the rootservice restart task while restart failed "
         "Range: [100000us, 1m]",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(tablet_meta_table_scan_batch_count, OB_CLUSTER_PARAMETER, "999", "(0, 65536]",
        "the number of tablet replica info "
        "that will be read by each request on the tablet-related system tables "
        "during procedures such as load-balancing, daily merge, election and etc. "
        "Range:(0,65536]",
        ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(ls_meta_table_check_interval, OB_CLUSTER_PARAMETER, "1s", "[1ms,)",
         "the time interval that observer compares ls meta table with local ls replica info "
         "and make adjustments to ensure the correctness of ls meta table. Range: [1ms,+∞)",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(tablet_meta_table_check_interval, OB_CLUSTER_PARAMETER, "30m", "[1m,)",
         "the time interval that observer compares tablet meta table with local ls replica info "
         "and make adjustments to ensure the correctness of tablet meta table. Range: [1m,+∞)",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(min_observer_version, OB_CLUSTER_PARAMETER, "4.1.0.0", "the min observer version",
        ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(compatible, OB_TENANT_PARAMETER, "4.1.0.0", "compatible version for persisted data",
        ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_ddl, OB_CLUSTER_PARAMETER, "True", "specifies whether DDL operation is turned on. "
         "Value:  True:turned on;  False: turned off",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_major_freeze, OB_CLUSTER_PARAMETER, "True", "specifies whether major_freeze function is turned on. "
         "Value:  True:turned on;  False: turned off",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(ob_event_history_recycle_interval, OB_CLUSTER_PARAMETER, "7d", "[1d, 180d]",
         "the time to recycle event history. Range: [1d, 180d]",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(_recyclebin_object_purge_frequency, OB_CLUSTER_PARAMETER, "10m", "[0m,)",
         "the time to purge recyclebin. Range: [0m, +∞)",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(recyclebin_object_expire_time, OB_CLUSTER_PARAMETER, "0s", "[0s,)",
         "recyclebin object expire time, "
         "default 0 that means auto purge recyclebin off. Range: [0s, +∞)",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// ========================= LogService Config Begin =====================

DEF_CAP(log_disk_size, OB_CLUSTER_PARAMETER, "0", "[0M,)",
        "the size of disk space used by the log files. Range: [0, +∞)",
        ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(log_disk_percentage, OB_CLUSTER_PARAMETER, "0", "[0,99]",
        "the percentage of disk space used by the log files. Range: [0,99] in integer;"
        "only effective when parameter log_disk_size is 0;"
        "when log_disk_percentage is 0:"
        " a) if the data and the log are on the same disk, means log_disk_percentage = 30"
        " b) if the data and the log are on the different disks, means log_disk_perecentage = 90",
        ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO(xianlin.lh): add the feature on 4.1
//DEF_BOOL(clog_transport_compress_all, OB_CLUSTER_PARAMETER, "False",
//         "If this option is set to true, use compression for clog transport. "
//         "The default is false(no compression)",
//         ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO(xianlin.lh): add the feature on 4.1
//DEF_STR_WITH_CHECKER(clog_transport_compress_func, OB_CLUSTER_PARAMETER, "lz4_1.0",
//                     common::ObConfigBatchRpcCompressFuncChecker,
//                     "compressor used for clog transport. Values: none, lz4_1.0, zstd_1.0, zstd_1.3.8",
//                     ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO(xianlin.lh): add the feature on 4.1
//DEF_BOOL(enable_clog_persistence_compress, OB_TENANT_PARAMETER, "False",
//         "If this option is set to true, use compression for clog persistence. "
//         "The default is false(no compression)",
//         ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO(xianlin.lh): add the feature on 4.1
//DEF_STR_WITH_CHECKER(clog_persistence_compress_func, OB_TENANT_PARAMETER, "lz4_1.0",
//                     common::ObConfigPerfCompressFuncChecker,
//                     "compressor used for clog persistence. Values: none, lz4_1.0, zstd_1.0, zstd_1.3.8",
//                     ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO(shuning.tsn) : add the feature on 4.1
//DEF_BOOL(enable_log_archive, OB_CLUSTER_PARAMETER, "False",
//         "control if enable log archive",
//         ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO(shuning.tsn) : add the feature on 4.1
//DEF_INT(log_restore_concurrency, OB_CLUSTER_PARAMETER, "10", "[1,]",
//        "concurrency for log restoring"
//        "Range: [1, ] in integer",
//        ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO(shuning.tsn) : add the feature on 4.1
//DEF_INT(log_archive_concurrency, OB_CLUSTER_PARAMETER, "0", "[0,]",
//        "concurrency  for log_archive_sender and log_archive_spiter"
//        "Range: [0, ] in integer",
//        ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(log_disk_utilization_limit_threshold, OB_TENANT_PARAMETER, "95",
        "[80, 100]",
        "maximum of log disk usage percentage before stop submitting or receiving logs, "
        "should be bigger than log_disk_utilization_threshold. "
        "Range: [80, 100]",
        ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(log_disk_utilization_threshold, OB_TENANT_PARAMETER,"80",
        "[10, 100)",
        "log disk utilization threshold before reuse log files, "
        "should be smaller than log_disk_utilization_limit_threshold. "
        "Range: [10, 100)",
        ObParameterAttr(Section::LOGSERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// ========================= LogService Config End   =====================
DEF_INT(resource_hard_limit, OB_CLUSTER_PARAMETER, "100", "[100, 10000]",
        "system utilization should not be large than resource_hard_limit",
        ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_rereplication, OB_CLUSTER_PARAMETER, "True",
         "specifies whether the auto-replication is turned on. "
         "Value:  True:turned on  False: turned off",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_rebalance, OB_CLUSTER_PARAMETER, "True",
         "specifies whether the load-balancing is turned on. "
         "Value:  True:turned on  False: turned off",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(balancer_idle_time, OB_CLUSTER_PARAMETER, "5m", "[10s,]",
         "the time interval between the schedules of the load-balancing task. "
         "Range: [10s, +∞)",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(balancer_tolerance_percentage, OB_CLUSTER_PARAMETER, "10", "[1, 100)",
        "specifies the tolerance (in percentage) of the unbalance of the disk space utilization "
        "among all units. The average disk space utilization is calculated by dividing "
        "the total space by the number of units. For example, say balancer_tolerance_percentage "
        "is set to 10 and a tenant has two units in the system, "
        "the average disk use for each unit should be about the same, "
        "thus 50% of the total value. Therefore, the system will start a rebalancing task "
        "when any unit\\'s disk space goes beyond +-10% of the average usage. "
        "Range: [1, 100) in percentage",
        ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(balancer_task_timeout, OB_CLUSTER_PARAMETER, "20m", "[1s,)",
         "the time to execute the load-balancing task before it is terminated. Range: [1s, +∞)",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(balancer_log_interval, OB_CLUSTER_PARAMETER, "1m", "[1s,)",
         "the time interval between logging the load-balancing task\\'s statistics. "
         "Range: [1s, +∞)",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(__balance_controller, OB_CLUSTER_PARAMETER, "",
        "specifies whether the balance events are turned on or turned off.",
        ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(__min_full_resource_pool_memory, OB_CLUSTER_PARAMETER, "5368709120", "[1073741824,)",
        "the min memory value which is specified for a full resource pool.",
        ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(server_balance_critical_disk_waterlevel, OB_CLUSTER_PARAMETER, "80", "[0, 100]",
        "disk water level to determine server balance strategy",
        ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(server_balance_disk_tolerance_percent, OB_CLUSTER_PARAMETER, "1", "[1, 100]",
        "specifies the tolerance (in percentage) of the unbalance of the disk space utilization "
        "among all servers. The average disk space utilization is calculated by dividing "
        "the total space by the number of servers. "
        "server balancer will start a rebalancing task "
        "when the deviation between the average usage and some server load is greater than this tolerance "
        "Range: [1, 100] in percentage",
        ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(server_balance_cpu_mem_tolerance_percent, OB_CLUSTER_PARAMETER, "5", "[1, 100]",
        "specifies the tolerance (in percentage) of the unbalance of the cpu/memory utilization "
        "among all servers. The average cpu/memory utilization is calculated by dividing "
        "the total cpu/memory by the number of servers. "
        "server balancer will start a rebalancing task "
        "when the deviation between the average usage and some server load is greater than this tolerance "
        "Range: [1, 100] in percentage",
        ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(_lcl_op_interval, OB_CLUSTER_PARAMETER, "30ms", "[0ms, 1s]",
         "Scan interval for every detector node, smaller interval support larger deadlock scale, but cost more system resource. "
         "0ms means disable deadlock, default value is 30ms. Range:[0ms, 1s]",
         ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(enable_sys_unit_standalone, OB_CLUSTER_PARAMETER, "False",
         "specifies whether sys unit standalone deployment is turned on. "
         "Value:  True:turned on  False: turned off",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//// daily merge  config
// set to disable if don't want major freeze launch auto
DEF_MOMENT(major_freeze_duty_time, OB_TENANT_PARAMETER, "02:00",
           "the start time of system daily merge procedure. Range: [00:00, 24:00)",
           ObParameterAttr(Section::DAILY_MERGE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(merger_check_interval, OB_TENANT_PARAMETER, "10m", "[10s, 60m]",
         "the time interval between the schedules of the task "
         "that checks on the progress of MERGE for each zone. Range: [10s, 60m]",
         ObParameterAttr(Section::DAILY_MERGE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
//// transaction config
DEF_TIME(trx_2pc_retry_interval, OB_CLUSTER_PARAMETER, "100ms", "[1ms, 5000ms]",
         "the time interval between the retries in case of failure "
         "during a transaction\\'s two-phase commit phase. Range: [1ms,5000ms]",
         ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(clog_sync_time_warn_threshold, OB_CLUSTER_PARAMETER, "100ms", "[1ms, 10000ms]",
         "the time given to the commit log synchronization between a leader and its followers "
         "before a \\'warning\\' message is printed in the log file.  Range: [1ms,1000ms]",
         ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(row_compaction_update_limit, OB_CLUSTER_PARAMETER, "6", "[1, 6400]",
        "maximum update count before trigger row compaction. "
        "Range: [1, 6400]",
        ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(ignore_replay_checksum_error, OB_CLUSTER_PARAMETER, "False",
         "specifies whether error raised from the memtable replay checksum validation can be ignored. "
         "Value: True:ignored; False: not ignored",
         ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(_rpc_checksum, OB_CLUSTER_PARAMETER, "Force",
                     common::ObConfigRpcChecksumChecker,
                     "Force: always verify; " \
                     "Optional: verify when rpc_checksum non-zero; " \
                     "Disable: ignore verify",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE))

DEF_TIME(_ob_trans_rpc_timeout, OB_CLUSTER_PARAMETER, "3s", "[0s, 3600s]",
         "transaction rpc timeout(s). Range: [0s, 3600s]",
         ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_early_lock_release, OB_TENANT_PARAMETER, "False",
         "enable early lock release",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(_ob_get_gts_ahead_interval, OB_CLUSTER_PARAMETER, "0s", "[0s, 1s]",
         "get gts ahead interval. Range: [0s, 1s]",
         ObParameterAttr(Section::TRANS, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//// rpc config
DEF_TIME(rpc_timeout, OB_CLUSTER_PARAMETER, "2s",
         "the time during which a RPC request is permitted to execute before it is terminated",
         ObParameterAttr(Section::RPC, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//// location cache config
DEF_TIME(virtual_table_location_cache_expire_time, OB_CLUSTER_PARAMETER, "8s", "[1s,)",
         "expiration time for virtual table location info in partiton location cache. "
         "Range: [1s, +∞)",
         ObParameterAttr(Section::LOCATION_CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(location_refresh_thread_count, OB_CLUSTER_PARAMETER, "4", "(1,64]",
        "the number of threads for fetching location cache in the background. Range: (1, 64]",
        ObParameterAttr(Section::LOCATION_CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(location_fetch_concurrency, OB_CLUSTER_PARAMETER, "20", "[1, 1000]",
        "the maximum number of the tasks for fetching location cache concurrently. Range: [1, 1000]",
        ObParameterAttr(Section::LOCATION_CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(location_cache_refresh_min_interval, OB_CLUSTER_PARAMETER, "100ms", "[0s,)",
         "the time interval in which no request for location cache renewal will be executed. "
         "The default value is 100 milliseconds. [0s, +∞)",
         ObParameterAttr(Section::LOCATION_CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(all_server_list, OB_CLUSTER_PARAMETER, "",
        "all server addr in cluster",
        ObParameterAttr(Section::LOCATION_CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(location_cache_refresh_rpc_timeout, OB_CLUSTER_PARAMETER, "500ms", "[1ms,)",
        "The timeout used for refreshing location cache by RPC. Range: [1ms, +∞)",
        ObParameterAttr(Section::LOCATION_CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(location_cache_refresh_sql_timeout, OB_CLUSTER_PARAMETER, "1s", "[1ms,)",
        "The timeout used for refreshing location cache by SQL. Range: [1ms, +∞)",
        ObParameterAttr(Section::LOCATION_CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//// cache config
DEF_INT(tablet_ls_cache_priority, OB_CLUSTER_PARAMETER, "1000", "[1,)", "tablet ls cache priority. Range:[1, )",
        ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(opt_tab_stat_cache_priority, OB_CLUSTER_PARAMETER, "1", "[1,)", "tab stat cache priority. Range:[1, )",
        ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(index_block_cache_priority, OB_CLUSTER_PARAMETER, "10", "[1,)", "index cache priority. Range:[1, )",
        ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(user_block_cache_priority, OB_CLUSTER_PARAMETER, "1", "[1,)", "user block cache priority. Range:[1, )",
        ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(user_row_cache_priority, OB_CLUSTER_PARAMETER, "1", "[1,)", "user row cache priority. Range:[1, )",
        ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(bf_cache_priority, OB_CLUSTER_PARAMETER, "1", "[1,)", "bf cache priority. Range:[1, )",
        ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(bf_cache_miss_count_threshold, OB_CLUSTER_PARAMETER, "100", "[0,)", "bf cache miss count threshold, 0 means disable bf cache. Range:[0, )",
        ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(fuse_row_cache_priority, OB_CLUSTER_PARAMETER, "1", "[1,)", "fuse row cache priority. Range:[1, )", ObParameterAttr(Section::CACHE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//background limit config
DEF_TIME(_data_storage_io_timeout, OB_CLUSTER_PARAMETER, "120s", "[5s,600s]",
        "io timeout for data storage, Range [5s,600s]. "
        "The default value is 120s",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(data_storage_warning_tolerance_time, OB_CLUSTER_PARAMETER, "30s", "[10s,300s]",
        "time to tolerate disk read failure, after that, the disk status will be set warning. Range [10s,300s]. The default value is 30s",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME_WITH_CHECKER(data_storage_error_tolerance_time, OB_CLUSTER_PARAMETER, "300s", common::ObDataStorageErrorToleranceTimeChecker, "[10s,7200s]",
        "time to tolerate disk read failure, after that, the disk status will be set error. Range [10s,7200s]. The default value is 300s",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(data_disk_usage_limit_percentage, OB_CLUSTER_PARAMETER, "90", "[50,100]",
        "the safe use percentage of data disk"
        "Range: [50,100] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(sys_bkgd_net_percentage, OB_CLUSTER_PARAMETER, "60", "[0,100]",
        "the net percentage of sys background net. Range: [0, 100] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT_WITH_CHECKER(disk_io_thread_count, OB_CLUSTER_PARAMETER, "8",
                     common::ObConfigEvenIntChecker,
                     "[2,32]",
                     "The number of io threads on each disk. The default value is 8. Range: [2,32] in even integer",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_io_callback_thread_count, OB_TENANT_PARAMETER, "8", "[1,64]",
        "The number of io callback threads. The default value is 8. Range: [1,64] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(io_category_config, OB_TENANT_PARAMETER, "other: 100,100,100",
        "configs for different category of io request. specify with category name, minimal percentage, maximal percentage, weight percentage. devide the category with semicolon",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_large_query_io_percentage, OB_CLUSTER_PARAMETER, "0", "[0,100]",
        "the max percentage of io resource for big query. Range: [0,100] in integer. Especially, 0 means unlimited. The default value is 0.",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(_enable_parallel_minor_merge, OB_TENANT_PARAMETER, "True",
         "specifies whether enable parallel minor merge. "
         "Value: True:turned on;  False: turned off",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(compaction_low_thread_score, OB_TENANT_PARAMETER, "0", "[0,100]",
        "the current work thread score of low priority compaction. Range: [0,100] in integer. Especially, 0 means default value",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(compaction_mid_thread_score, OB_TENANT_PARAMETER, "0", "[0,100]",
        "the current work thread score of middle priority compaction. Range: [0,100] in integer. Especially, 0 means default value",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(compaction_high_thread_score, OB_TENANT_PARAMETER, "0", "[0,100]",
        "the current work thread score of high priority compaction. Range: [0,100] in integer. Especially, 0 means default value",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(ha_high_thread_score, OB_TENANT_PARAMETER, "0", "[0,100]",
        "the current work thread score of high availability high thread. Range: [0,100] in integer. Especially, 0 means default value",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(ha_mid_thread_score, OB_TENANT_PARAMETER, "0", "[0,100]",
        "the current work thread score of high availability mid thread. Range: [0,100] in integer. Especially, 0 means default value",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(ha_low_thread_score, OB_TENANT_PARAMETER, "0", "[0,100]",
        "the current work thread score of high availability low thread. Range: [0,100] in integer. Especially, 0 means default value",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(restore_concurrency, OB_CLUSTER_PARAMETER, "0", "[0,512]",
        "the current work thread num of restore macro block. Range: [0,512] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(minor_compact_trigger, OB_TENANT_PARAMETER, "2", "[0,16]",
        "minor_compact_trigger, Range: [0,16] in integer",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_compaction_diagnose, OB_CLUSTER_PARAMETER, "False",
         "enable compaction diagnose function"
         "Value:  True:turned on;  False: turned off",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(_force_skip_encoding_partition_id, OB_CLUSTER_PARAMETER, "",
        "force the specified partition to major without encoding row store, only for emergency!",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(_private_buffer_size, OB_CLUSTER_PARAMETER, "256K", "[0B,)"
         "the trigger remaining data size within transaction for immediate logging, 0B represents not trigger immediate logging"
         "Range: [0B, total size of memory]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_fast_commit_callback_count, OB_CLUSTER_PARAMETER, "10000", "[0,)"
        "trigger max callback count allowed within transaction for durable callback checkpoint, 0 represents not allow durable callback"
        "Range: [0, not limited callback count",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_minor_compaction_amplification_factor, OB_TENANT_PARAMETER, "0", "[0,100]",
        "thre L1 compaction write amplification factor, 0 means default 25, Range: [0,100] in integer",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(_minor_compaction_interval, OB_TENANT_PARAMETER, "0s", "[0s,30m]",
         "the time interval to start next minor compaction, Range: [0s,30m]"
         "Range: [0s, 30m)",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(major_compact_trigger, OB_TENANT_PARAMETER, "0", "[0,65535]",
        "specifies how many minor freeze should be triggered between two major freeze, Range: [0,65535] in integer",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(ob_compaction_schedule_interval, OB_TENANT_PARAMETER, "120s", "[3s,5m]",
         "the time interval to schedule compaction, Range: [3s,5m]"
         "Range: [3s, 5m]",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_ob_elr_fast_freeze_threshold, OB_CLUSTER_PARAMETER, "500000", "[10000,)",
         "per row update counts threshold to trigger minor freeze for tables with ELR optimization",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_ob_enable_fast_freeze, OB_TENANT_PARAMETER, "True",
         "specifies whether the tenant's fast freeze is enabled"
         "Value: True:turned on;  False: turned off",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(sys_bkgd_migration_retry_num, OB_CLUSTER_PARAMETER, "3", "[3,100]",
        "retry num limit during migration. Range: [3, 100] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(sys_bkgd_migration_change_member_list_timeout, OB_CLUSTER_PARAMETER, "20s", "[0s,24h]",
         "the timeout for migration change member list retry. "
         "The default value is 20s. Range: [0s,24h]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//Tablet config
DEF_CAP_WITH_CHECKER(tablet_size, OB_CLUSTER_PARAMETER, "128M",
                     common::ObConfigTabletSizeChecker,
                     "default tablet size, has to be a multiple of 2M",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(builtin_db_data_verify_cycle, OB_CLUSTER_PARAMETER, "20", "[0, 360]",
        "check cycle of db data. Range: [0, 360] in integer. Unit: day. "
        "0: check nothing. "
        "1-360: check all data every specified days. "
        "The default value is 20. "
        "The real check cycle maybe longer than the specified value for insuring performance.",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(micro_block_merge_verify_level, OB_CLUSTER_PARAMETER, "2", "[0,3]",
        "specify what kind of verification should be done when merging micro block. "
        "0 : no verification will be done "
        "1 : verify encoding algorithm, encoded micro block will be read to ensure data is correct "
        "2 : verify encoding and compression algorithm, besides encoding verification, compressed block will be decompressed to ensure data is correct"
        "3 : verify encoding, compression algorithm and lost write protect",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(_migrate_block_verify_level, OB_CLUSTER_PARAMETER, "1", "[0,2]",
        "specify what kind of verification should be done when migrating macro block. "
        "0 : no verification will be done "
        "1 : physical verification"
        "2 : logical verification",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(_cache_wash_interval, OB_CLUSTER_PARAMETER, "200ms", "[1ms, 1m]",
        "specify interval of cache background wash",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO bin.lb: to be remove
DEF_CAP(dtl_buffer_size, OB_CLUSTER_PARAMETER, "64K", "[4K,2M]", "to be removed",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// TODO bin.lb: to be remove
DEF_CAP(px_task_size, OB_CLUSTER_PARAMETER, "2M", "[2M,)", "to be removed",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_max_elr_dependent_trx_count, OB_CLUSTER_PARAMETER, "0", "[0,)", "max elr dependent transaction count",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

ERRSIM_DEF_INT(errsim_max_backup_retry_count, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "max backup retry count in errsim mode"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

ERRSIM_DEF_TIME(errsim_max_backup_meta_retry_time_interval, OB_CLUSTER_PARAMETER, "10s", "[1s,5m]",
        "max backup meta retry time interval in errsim mode"
        "Range: [1s, 5m]",
        ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

ERRSIM_DEF_INT(errsim_tablet_batch_count, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "batch tablet count when in errsim mode"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(errsim_backup_tablet_id, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "the tablet id that backup want to insert error"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(skip_report_pg_backup_task_table_id, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "skip_report_pg_backup_task table id"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(fake_once_init_restore_macro_index_store, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "0 for not fake, 1 for major, 2 for minor"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_BOOL(enable_disk_error_test, OB_CLUSTER_PARAMETER, "False",
         "when disk error test mode is enabled, observer send disk error "
         "status to rs in lease request",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_BOOL(skip_update_estimator, OB_CLUSTER_PARAMETER, "False",
         "skip update_estimator during daily merge. ",
         ObParameterAttr(Section::DAILY_MERGE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_BOOL(with_new_migrated_replica, OB_CLUSTER_PARAMETER, "False",
         "it is new migrated replica, can not be removed by old migration. ",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_TIME(sys_bkgd_migration_large_task_threshold, OB_CLUSTER_PARAMETER, "2h", "[0s,24h]",
         "the timeout for migration change member list retry. "
         "The default value is 2h. Range: [0s,24h]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(macro_block_builder_errsim_flag, OB_CLUSTER_PARAMETER, "0", "[0,100]",
        "macro_block_builder_errsim_flag"
        "Range: [0,100] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_BOOL(skip_balance_disk_limit, OB_CLUSTER_PARAMETER, "False",
         "skip_dbalance_isk_limit. ",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_BOOL(pwrite_errsim, OB_CLUSTER_PARAMETER, "False",
         "pwrite_errsim",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_BOOL(fake_disk_error, OB_CLUSTER_PARAMETER, "False",
         "fake_disk_error",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(_max_block_per_backup_task, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "the max macro block count per backup sub task"
        "Range: [0,max) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_TIME(backup_lease_takeover_time, OB_CLUSTER_PARAMETER, "10s", "[1s, 5m]",
         "Lease Takeover Time for Rootserver Backup heartbeat. Range: [1s, 5m]",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

ERRSIM_DEF_TIME(trigger_auto_backup_delete_interval, OB_CLUSTER_PARAMETER, "1h", "[1s,)",
         "trigger auto backup delete interval."
         "The default value is 1h. Range: [1s,)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

ERRSIM_DEF_INT(errsim_max_restore_retry_count, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "max restore retry count in errsim mode"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

#ifdef TRANS_MODULE_TEST
DEF_INT(module_test_trx_memory_errsim_percentage, OB_CLUSTER_PARAMETER, "0", "[0, 100]",
        "the percentage of memory errsim. Rang:[0，100]",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
#endif

DEF_CAP(sql_work_area, OB_TENANT_PARAMETER, "1G", "[10M,)",
        "Work area memory limitation for tenant",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_CAP(__easy_memory_limit, OB_CLUSTER_PARAMETER, "4G", "[1G,)",
        "max memory size which can be used by libeasy. The default value is 4G. Range: [1G,)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_CAP(stack_size, OB_CLUSTER_PARAMETER, "512K", "[512K, 20M]",
        "the size of routine execution stack"
        "Range: [512K, 20M]",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_INT(__easy_memory_reserved_percentage, OB_CLUSTER_PARAMETER, "0", "[0,100]",
        "the percentage of easy memory reserved size. The default value is 0. Range: [0,100]",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_px_max_pipeline_depth, OB_CLUSTER_PARAMETER, "2", "[2,3]",
        "max parallel execution pipeline depth, "
        "range: [2,3]",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
//ssl
DEF_BOOL(ssl_client_authentication, OB_CLUSTER_PARAMETER, "False",
         "enable server SSL support. Takes effect after ca/cert/key file is configured correctly. ",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(use_ipv6, OB_CLUSTER_PARAMETER, "False",
         "Whether this server uses ipv6 address",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));

//audit 审计功能相关
DEF_BOOL(audit_sys_operations, OB_TENANT_PARAMETER, "False",
         "whether trace sys user operations",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(audit_trail, OB_TENANT_PARAMETER, "None",
         common::ObConfigAuditTrailChecker,
         "enables or disables database auditing, support NONE;OS;DB;DB,EXTENDED;DB_EXTENDED",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

//ddl 超时时间
DEF_TIME(_ob_ddl_timeout, OB_CLUSTER_PARAMETER, "1000s", "[1s,)",
         "the config parameter of ddl timeout"
         "Range: [1s, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

// backup 备份恢复相关的配置
DEF_CAP(backup_data_file_size, OB_CLUSTER_PARAMETER, "4G", "[512M,4G]",
        "backup data file size. "
        "Range: [512M, 4G] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(_backup_task_keep_alive_interval, OB_CLUSTER_PARAMETER, "10s", "[1s,)",
         "control backup task keep alive interval"
         "Range: [1s, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(_backup_task_keep_alive_timeout, OB_CLUSTER_PARAMETER, "10m", "[1s,)",
         "control backup task keep alive timeout"
         "Range: [1s, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));


DEF_BOOL(ob_enable_batched_multi_statement, OB_TENANT_PARAMETER, "False",
         "enable use of batched multi statement",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(_enable_dist_data_access_service, OB_TENANT_PARAMETER, "True",
         "enable use das service",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(_bloom_filter_ratio, OB_CLUSTER_PARAMETER, "35", "[0, 100]",
        "the px bloom filter false-positive rate.the default value is 1, range: [0,100]",
         ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(_restore_idle_time, OB_CLUSTER_PARAMETER, "1m", "[10s,]",
         "the time interval between the schedules of physical restore task. "
         "Range: [10s, +∞)",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(_backup_idle_time, OB_CLUSTER_PARAMETER, "5m", "[10s,]",
         "the time interval between the schedules of physical backup task. "
         "Range: [10s, +∞)",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_ob_enable_prepared_statement, OB_CLUSTER_PARAMETER, "True",
         "control if enable prepared statement",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(_upgrade_stage, OB_CLUSTER_PARAMETER, "NONE",
        common::ObConfigUpgradeStageChecker,
        "specifies the upgrade stage. "
        "NONE: in non upgrade stage, "
        "PREUPGRADE: in pre upgrade stage, "
        "DBUPGRADE: in db uprade stage, "
        "POSTUPGRADE: in post upgrade stage. ",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::READONLY));
DEF_STR_WITH_CHECKER(_ob_plan_cache_gc_strategy, OB_CLUSTER_PARAMETER, "REPORT",
         common::ObConfigPlanCacheGCChecker,
         "OFF: disabled, "
         "REPORT: check leaked cache object infos only, "
         "AUTO: check and release leaked cache obj.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(_enable_plan_cache_mem_diagnosis, OB_CLUSTER_PARAMETER, "False",
         "wether turn plan cache ref count diagnosis on",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_STR(external_kms_info, OB_TENANT_PARAMETER, "",
        "when using the external key management center, "
        "this parameter will store some key management information",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_STR(tde_method, OB_TENANT_PARAMETER, "none",
        "none : transparent encryption is none, none means cannot use tde, "
        "internal : transparent encryption is in the form of internal tables, "
        "bkmi : transparent encryption is in the form of external bkmi",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(schema_history_recycle_interval, OB_CLUSTER_PARAMETER, "10m", "[0s,]",
         "the time interval between the schedules of schema history recyle task. "
         "Range: [0s, +∞)",
         ObParameterAttr(Section::LOAD_BALANCE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(_enable_oracle_priv_check, OB_CLUSTER_PARAMETER, "True",
         "whether turn on oracle privilege check ",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
// for pl/sql compiler
DEF_STR(plsql_ccflags, OB_TENANT_PARAMETER, "",
        "provides a mechanism that allows PL/SQL programmers to control"
        "conditional compilation of each PL/SQL library unit independently",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(plsql_code_type, OB_TENANT_PARAMETER, "native",
        "specifies the compilation mode for PL/SQL library units",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(plsql_debug, OB_TENANT_PARAMETER, "False",
         "specifies whether or not PL/SQL library units will be compiled for debugging",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(plsql_optimize_level, OB_TENANT_PARAMETER, "1",
        "specifies the optimization level that will be used to"
        "compile PL/SQL library units. The higher the setting of this parameter, the more effort"
        "the compiler makes to optimize PL/SQL library units",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(plsql_v2_compatibility, OB_TENANT_PARAMETER, "False",
         "allows some abnormal behavior that Version 8 disallows, not available",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(plsql_warnings, OB_TENANT_PARAMETER, "DISABLE::ALL",
        "enables or disables the reporting of warning messages by the"
        "PL/SQL compiler, and specifies which warning messages to show as errors",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
// for bloom filter
DEF_BOOL(_bloom_filter_enabled, OB_TENANT_PARAMETER, "True",
         "enable join bloom filter",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(use_large_pages, OB_CLUSTER_PARAMETER, "false",
                     common::ObConfigUseLargePagesChecker,
                     "used to manage the database's use of large pages, "
                     "values: false, true, only",
                     ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));

DEF_STR(ob_ssl_invited_common_names, OB_TENANT_PARAMETER, "NONE",
        "when server use ssl, use it to control client identity with ssl subject common name. default NONE",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_STR(ssl_external_kms_info, OB_CLUSTER_PARAMETER, "",
        "when using the external key management center for ssl, "
        "this parameter will store some key management information",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(_ob_ssl_invited_nodes, OB_CLUSTER_PARAMETER, "NONE",
        "when rpc need use ssl, we will use it to store invited server ipv4 during grayscale change."
        "when it is finish, it can use ALL instead of all server ipv4",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(_audit_mode, OB_TENANT_PARAMETER, "NONE",
        common::ObConfigAuditModeChecker,
        "specifies audit mode,"
        "NONE: close audit,"
        "MYSQL: use mysql audit"
        "ORACLE: use oracle audit",
        ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_max_schema_slot_num, OB_CLUSTER_PARAMETER, "128", "[2,8192]",
        "the max schema slot number for each tenant, "
        "Range: [2, 8192] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_fulltext_index, OB_CLUSTER_PARAMETER, "False",
         "enable full text index",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT_WITH_CHECKER(_ob_query_rate_limit, OB_TENANT_PARAMETER, "-1",
        common::ObConfigQueryRateLimitChecker,
        "the maximun throughput allowed for a tenant per observer instance",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(_xa_gc_timeout, OB_CLUSTER_PARAMETER, "24h", "[1s,)",
        "specifies the threshold value for a xa record to be considered as obsolete",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(_xa_gc_interval, OB_CLUSTER_PARAMETER, "1h", "[1s,)",
        "specifies the scan interval of the gc worker",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_easy_keepalive, OB_CLUSTER_PARAMETER, "True",
         "enable keepalive for each TCP connection.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(enable_ob_ratelimit, OB_CLUSTER_PARAMETER, "False",
         "enable ratelimit between regions for RPC connection.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(ob_ratelimit_stat_period, OB_CLUSTER_PARAMETER, "1s", "[100ms,]",
         "the time interval to update observer's maximum bandwidth to a certain region. ",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(open_cursors, OB_TENANT_PARAMETER, "50", "[0,65535]",
        "specifies the maximum number of open cursors a session can have at once."
        "can use this parameter to prevent a session from opening an excessive number of cursors."
        "Range: [0, 65535] in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_px_batch_rescan, OB_TENANT_PARAMETER, "True",
         "enable px batch rescan for nlj or subplan filter",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(_parallel_max_active_sessions, OB_TENANT_PARAMETER, "0", "[0,]",
        "max active parallel sessions allowed for tenant. Range: [0,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(enable_tcp_keepalive, OB_CLUSTER_PARAMETER, "true",
         "enable TCP keepalive for the TCP connection of sql protocol. Take effect for "
         "new established connections.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(tcp_keepidle, OB_CLUSTER_PARAMETER, "7200s", "[1s,]",
         "The time (in seconds) the connection needs to remain idle before TCP "
         "starts sending keepalive probe. Take effect for new established connections. "
         "Range: [1s, +∞]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(tcp_keepintvl, OB_CLUSTER_PARAMETER, "6s", "[1s,]",
         "The time (in seconds) between individual keepalive probes. Take effect for new "
         "established connections. Range: [1s, +∞]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(tcp_keepcnt, OB_CLUSTER_PARAMETER, "10", "[1,]",
        "The maximum number of keepalive probes TCP should send before dropping "
        "the connection. Take effect for new established connections. Range: [1,+∞)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_send_bloom_filter_size, OB_CLUSTER_PARAMETER, "1024", "[1,]",
         "Set send bloom filter slice size"
         "Range: [1, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_px_ordered_coord, OB_CLUSTER_PARAMETER, "false",
         "enable px task ordered coord",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(connection_control_failed_connections_threshold, OB_TENANT_PARAMETER, "0", "[0,2147483647]",
        "The number of consecutive failed connection attempts permitted to accounts"
        "before the server adds a delay for subsequent connection attempts",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(connection_control_min_connection_delay, OB_TENANT_PARAMETER, "1000", "[1000,2147483647]",
        "The minimum delay in milliseconds for server response to failed connection attempts, "
        "if connection_control_failed_connections_threshold is greater than zero.",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(connection_control_max_connection_delay, OB_TENANT_PARAMETER, "2147483647", "[1000,2147483647]",
        "The maximum delay in milliseconds for server response to failed connection attempts, "
        "if connection_control_failed_connections_threshold is greater than zero",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(ob_proxy_readonly_transaction_routing_policy, OB_TENANT_PARAMETER, "false",
         "Proxy route policy for readonly sql: whether regard begining read only stmts as in transaction",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(job_queue_processes, OB_TENANT_PARAMETER, "1000", "[0,1000]",
        "specifies the maximum number of job slaves per instance that can be created "
        "for the execution of DBMS_JOB jobs and Oracle Scheduler (DBMS_SCHEDULER) jobs.",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_resource_limit_spec, OB_CLUSTER_PARAMETER, "False",
         "specify whether resource limit check is turned on",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(_resource_limit_spec, OB_CLUSTER_PARAMETER, "auto", common::ObConfigResourceLimitSpecChecker,
        "this parameter encodes some resource limit parameters to json",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(_enable_px_bloom_filter_sync, OB_TENANT_PARAMETER, "false",
         "specifies whether wait px bloom filter ready with all thread",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_STR_WITH_CHECKER(_px_bloom_filter_group_size, OB_TENANT_PARAMETER, "auto", common::ObConfigPxBFGroupSizeChecker,
         "specifies the px bloom filter each group size in sending to the other sqc"
         "Range: [1, +∞) or auto, the default value is auto",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(enable_sql_extension, OB_TENANT_PARAMETER, "False",
         "specifies whether to allow use some oracle mode features in mysql mode",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(_enable_block_file_punch_hole, OB_CLUSTER_PARAMETER, "False",
         "specifies whether to punch whole when free blocks in block_file",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_trace_session_leak, OB_CLUSTER_PARAMETER, "False",
         "specifies whether to enable tracing session leak",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_ob_enable_fast_parser, OB_CLUSTER_PARAMETER, "True",
         "control if enable fast parser",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_TIME(_ob_obj_dep_maint_task_interval, OB_CLUSTER_PARAMETER, "1ms", "[0,10s]",
         "The execution interval of the task of maintaining the dependency of the object. "\
         "Range: [0, 10s]",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(_enable_newsort, OB_CLUSTER_PARAMETER, "False",
         "control if enable encode sort",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_INT(_session_context_size, OB_CLUSTER_PARAMETER, "10000", "[0, 2147483647]",
         "limits the total number of (namespace, attribute) pairs "
         "used by all application contexts in the user session.",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::READONLY));
DEF_INT(_px_object_sampling, OB_TENANT_PARAMETER, "200", "[1, 100000]"
        "parallel query sampling for base objects (100000 = 100%)",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(_follower_snapshot_read_retry_duration, OB_TENANT_PARAMETER, "0ms", "[0ms,]",
         "the waiting time after the first judgment failure of strong reading on follower"
         "Range: [0ms, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR_WITH_CHECKER(default_auto_increment_mode, OB_TENANT_PARAMETER, "order",
        common::ObAutoIncrementModeChecker, "specifies default auto-increment mode, default is 'order'",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_STR(_trace_control_info, OB_TENANT_PARAMETER, "{\n  \"type_t\": {\n    \"level\":1,\n    \"sample_pct\":\"1.00\",\n    \"record_policy\":\"SAMPLE_AND_SLOW_QUERY\"\n  }\n}",
        "persistent control information for full-link trace",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(_print_sample_ppm, OB_TENANT_PARAMETER, "0", "[0, 1000000]",
        "In the full link diagnosis, control the frequency of printing traces to the log (unit is ppm, parts per million).",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_TIME(ob_query_switch_leader_retry_timeout, OB_TENANT_PARAMETER, "0ms", "[0ms,]",
         "max time spend on retry caused by leader swith or network disconnection"
         "Range: [0ms, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(default_enable_extended_rowid, OB_TENANT_PARAMETER, "false",
         "specifies whether to create table as extended rowid mode or not",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_enable_new_sql_nio, OB_CLUSTER_PARAMETER, "true",
"specifies whether SQL serial network is turned on. Turned on to support mysql_send_long_data"
"The default value is FALSE. Value: TRUE: turned on FALSE: turned off",
ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
// query response time
DEF_BOOL(query_response_time_stats, OB_TENANT_PARAMETER, "False",
    "Enable or disable QUERY_RESPONSE_TIME statistics collecting"
    "The default value is False. Value: TRUE: turned on FALSE: turned off",
    ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(query_response_time_flush, OB_TENANT_PARAMETER, "False",
    "Flush QUERY_RESPONSE_TIME table and re-read query_response_time_range_base"
    "The default value is False. Value: TRUE: trigger flush FALSE: do not trigger",
    ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_INT(query_response_time_range_base, OB_TENANT_PARAMETER, "10", "[2,10000]",
    "Select base of log for QUERY_RESPONSE_TIME ranges. WARNING: variable change takes affect only after flush."
    "The default value is False. Value: TRUE: trigger flush FALSE: do not trigger",
    ObParameterAttr(Section::TENANT, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
DEF_BOOL(_ignore_system_memory_over_limit_error, OB_CLUSTER_PARAMETER, "False",
         "When the hold of observer tenant is over the system_memory, print ERROR with False, or WARN with True",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_STR(backup_errsim_task_server_addr, OB_CLUSTER_PARAMETER, "",
        "the server addr that backup task send to when in errsim mode",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
#ifdef OB_USE_ASAN
DEF_BOOL(enable_asan_for_memory_context, OB_CLUSTER_PARAMETER, "False",
        "when use ob_asan, user can specifies whether to allow ObAsanAllocator(default is ObAllocator as allocator of MemoryContext",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
#endif
DEF_INT(sql_login_thread_count, OB_CLUSTER_PARAMETER, "0", "[0,32]",
        "the number of threads for sql login request. Range: [0, 32] in integer, 0 stands for use default thread count defined in TG."
        "the default thread count for login request in TG is normal:6 mini-mode:2",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
#ifndef ENABLE_SANITY
#else
DEF_STR_LIST(sanity_whitelist, OB_CLUSTER_PARAMETER, "", "vip who wouldn't leading to coredump",
             ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
#endif
DEF_TIME(_advance_checkpoint_timeout, OB_CLUSTER_PARAMETER, "30m", "[10s,180m]",
         "the timeout for backup/migrate advance checkpoint Range: [10s,180m]",
         ObParameterAttr(Section::ROOT_SERVICE, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(errsim_migration_tablet_id, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "the tablet id that migration want to insert error"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(errsim_max_ddl_sstable_count, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "max ddl sstable count in errsim mode"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_INT(errsim_max_ddl_block_count, OB_CLUSTER_PARAMETER, "0", "[0,)",
        "max ddl block count in errsim mode"
        "Range: [0,) in integer",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));
ERRSIM_DEF_STR(errsim_migration_src_server_addr, OB_CLUSTER_PARAMETER, "",
        "the server dest ls choose as src when in errsim mode",
        ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));

DEF_BOOL(enable_cgroup, OB_CLUSTER_PARAMETER, "True",
         "when set to false, cgroup will not init; when set to true but cgroup root dir is not ready, print ERROR",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::STATIC_EFFECTIVE));
DEF_TIME(_ob_plan_cache_auto_flush_interval, OB_CLUSTER_PARAMETER, "0s", "[0s,)",
         "time interval for auto periodic flush plan cache. Range: [0s, +∞)",
         ObParameterAttr(Section::OBSERVER, Source::DEFAULT, EditLevel::DYNAMIC_EFFECTIVE));