M(OpenFileForWrite, "Number of files open for writing") \
M(OpenFileForWrite, "Number of files open for writing") \
M(Read, "Number of read (read, pread, io_getevents, etc.) syscalls in fly") \
M(Read, "Number of read (read, pread, io_getevents, etc.) syscalls in fly") \
M(Write, "Number of write (write, pwrite, io_getevents, etc.) syscalls in fly") \
M(Write, "Number of write (write, pwrite, io_getevents, etc.) syscalls in fly") \
M(SendScalars, "Number of connections that are sending data for scalars to remote servers.") \
M(SendExternalTables, "Number of connections that are sending data for external tables to remote servers. External tables are used to implement GLOBAL IN and GLOBAL JOIN operators with distributed subqueries.") \
M(SendExternalTables, "Number of connections that are sending data for external tables to remote servers. External tables are used to implement GLOBAL IN and GLOBAL JOIN operators with distributed subqueries.") \
M(QueryThread, "Number of query processing threads") \
M(QueryThread, "Number of query processing threads") \
M(ReadonlyReplica, "Number of Replicated tables that are currently in readonly state due to re-initialization after ZooKeeper session loss or due to startup without ZooKeeper configured.") \
M(ReadonlyReplica, "Number of Replicated tables that are currently in readonly state due to re-initialization after ZooKeeper session loss or due to startup without ZooKeeper configured.") \
@@ -379,6 +379,8 @@ struct Settings : public SettingsCollection<Settings>
...
@@ -379,6 +379,8 @@ struct Settings : public SettingsCollection<Settings>
M(SettingUInt64, max_live_view_insert_blocks_before_refresh, 64, "Limit maximum number of inserted blocks after which mergeable blocks are dropped and query is re-executed.") \
M(SettingUInt64, max_live_view_insert_blocks_before_refresh, 64, "Limit maximum number of inserted blocks after which mergeable blocks are dropped and query is re-executed.") \
M(SettingUInt64, min_free_disk_space_for_temporary_data, 0, "The minimum disk space to keep while writing temporary data used in external sorting and aggregation.") \
M(SettingUInt64, min_free_disk_space_for_temporary_data, 0, "The minimum disk space to keep while writing temporary data used in external sorting and aggregation.") \
\
\
M(SettingBool, enable_scalar_subquery_optimization, true, "If it is set to true, prevent scalar subqueries from (de)serializing large scalar values and possibly avoid running the same subquery more than once.") \
\
/** Obsolete settings that do nothing but left for compatibility reasons. Remove each one after half a year of obsolescence. */ \
/** Obsolete settings that do nothing but left for compatibility reasons. Remove each one after half a year of obsolescence. */ \
\
\
M(SettingBool, allow_experimental_low_cardinality_type, true, "Obsolete setting, does nothing. Will be removed after 2019-08-13") \
M(SettingBool, allow_experimental_low_cardinality_type, true, "Obsolete setting, does nothing. Will be removed after 2019-08-13") \