Merge remote-tracking branch 'origin/develop' into feature/wal

documentation20/webdocs/markdowndocs/faq-ch.md

@@ -101,7 +101,20 @@ Connection = DriverManager.getConnection(url, properties);
   <version>2.0.4</version>
 </dependency>
 ```
-## 14. 怎么报告问题？
+## 14. taos connect failed, reason: invalid timestamp 
+
+常见原因是服务器和客户端时间没有校准，可以通过和时间服务器同步的方式（Linux 下使用 ntpdate 命令，Windows 在系统时间设置中选择自动同步）校准。
+
+
+
+## 15. 表名显示不全
+
+由于 taos shell 在终端中显示宽度有限，有可能比较长的表名显示不全，如果按照显示的不全的表名进行相关操作会发生 Table does not exist 错误。解决方法可以是通过修改 taos.cfg 文件中的设置项 maxBinaryDisplayWidth， 或者直接输入命令 set max_binary_display_width 100。或者在命令结尾使用 \G 参数来调整结果的显示方式。
+
+
+
+## 16. 怎么报告问题？
+
 如果 FAQ 中的信息不能够帮到您，需要 TDengine 技术团队的技术支持与协助，请将以下两个目录中内容打包:
 1. /var/log/taos
 2. /etc/taos 

packaging/cfg/taos.cfg

@@ -251,7 +251,7 @@
 # cqDebugFlag           131
 
 # enable/disable recording the SQL in taos client
-# tscEnableRecordSql    0
+# enableRecordSql    0
 
 # generate core file when service crash
 # enableCoreFile        1
@@ -264,3 +264,6 @@
 
 # enable/disable stream (continuous query)
 # stream                1
+
+# only 50% CPU resources will be used in query processing
+# halfCoresForQuery     0

src/client/src/tscFunctionImpl.c

@@ -4542,7 +4542,7 @@ static void sumrate_finalizer(SQLFunctionCtx *pCtx) {
 int32_t functionCompatList[] = {
     // count,   sum,      avg,       min,      max,    stddev,    percentile,   apercentile, first,   last
     1,          1,        1,         1,        1,      1,          1,           1,           1,      1,
-    // last_row,    top,    bottom,     spread,    twa,  leastsqr,     ts,       ts_dummy, tag_dummy, ts_z
+    // last_row,top,      bottom,    spread,   twa,    leastsqr,   ts,          ts_dummy, tag_dummy, ts_z
     4,         -1,       -1,         1,        1,      1,          1,           1,        1,     -1,
     //  tag,    colprj,   tagprj,    arithmetic, diff, first_dist, last_dist,   interp    rate    irate
     1,          1,        1,         1,       -1,      1,          1,           5,        1,      1,

src/client/src/tscParseInsert.c

@@ -630,11 +630,17 @@ int32_t tscAllocateMemIfNeed(STableDataBlocks *pDataBlock, int32_t rowSize, int3
   return TSDB_CODE_SUCCESS;
 }
 
-static void tsSetBlockInfo(SSubmitBlk *pBlocks, const STableMeta *pTableMeta, int32_t numOfRows) {
+static int32_t tsSetBlockInfo(SSubmitBlk *pBlocks, const STableMeta *pTableMeta, int32_t numOfRows) {
   pBlocks->tid = pTableMeta->id.tid;
   pBlocks->uid = pTableMeta->id.uid;
   pBlocks->sversion = pTableMeta->sversion;
+
+  if (pBlocks->numOfRows + numOfRows >= INT16_MAX) {
+    return TSDB_CODE_TSC_INVALID_SQL;
+  } else {
     pBlocks->numOfRows += numOfRows;
+    return TSDB_CODE_SUCCESS;
+  }
 }
 
 // data block is disordered, sort it in ascending order
@@ -722,7 +728,11 @@ static int32_t doParseInsertStatement(SSqlObj *pSql, void *pTableList, char **st
   }
 
   SSubmitBlk *pBlocks = (SSubmitBlk *)(dataBuf->pData);
-  tsSetBlockInfo(pBlocks, pTableMeta, numOfRows);
+  code = tsSetBlockInfo(pBlocks, pTableMeta, numOfRows);
+  if (code != TSDB_CODE_SUCCESS) {
+    tscInvalidSQLErrMsg(pCmd->payload, "too many rows in sql, total number of rows should be less than 32767", *str);
+    return code;
+  }
 
   dataBuf->vgId = pTableMeta->vgroupInfo.vgId;
   dataBuf->numOfTables = 1;
@@ -1384,7 +1394,10 @@ static int doPackSendDataBlock(SSqlObj *pSql, int32_t numOfRows, STableDataBlock
   STableMeta *pTableMeta = tscGetTableMetaInfoFromCmd(pCmd, pCmd->clauseIndex, 0)->pTableMeta;
 
   SSubmitBlk *pBlocks = (SSubmitBlk *)(pTableDataBlocks->pData);
-  tsSetBlockInfo(pBlocks, pTableMeta, numOfRows);
+  code = tsSetBlockInfo(pBlocks, pTableMeta, numOfRows);
+  if (code != TSDB_CODE_SUCCESS) {
+    return tscInvalidSQLErrMsg(pCmd->payload, "too many rows in sql, total number of rows should be less than 32767", NULL);
+  }
 
   if ((code = tscMergeTableDataBlocks(pSql, pCmd->pDataBlocks)) != TSDB_CODE_SUCCESS) {
     return code;

src/client/src/tscProfile.c

@@ -39,6 +39,7 @@ void tscInitConnCb(void *param, TAOS_RES *result, int code) {
     tscSlowQueryConnInitialized = true;
     tscSaveSlowQueryFp(sql, NULL);
   }
+  taos_free_result(result);
 }
 
 void tscAddIntoSqlList(SSqlObj *pSql) {
@@ -69,6 +70,7 @@ void tscSaveSlowQueryFpCb(void *param, TAOS_RES *result, int code) {
   } else {
     tscDebug("success to save slow query, code:%d", code);
   }
+  taos_free_result(result);
 }
 
 void tscSaveSlowQueryFp(void *handle, void *tmrId) {

src/client/src/tscSQLParser.c

@@ -2835,6 +2835,10 @@ static bool functionCompatibleCheck(SQueryInfo* pQueryInfo, bool joinQuery) {
 
     if (functionCompatList[functionId] != factor) {
       return false;
+    } else {
+      if (factor == -1) { // two functions with the same -1 flag
+        return false;
+      }
     }
 
     if (functionId == TSDB_FUNC_LAST_ROW && joinQuery) {

src/client/src/tscSystem.c

@@ -144,7 +144,7 @@ void taos_init_imp(void) {
   int64_t refreshTime = 10; // 10 seconds by default
   if (tscMetaCache == NULL) {
     tscMetaCache = taosCacheInit(TSDB_DATA_TYPE_BINARY, refreshTime, false, tscFreeTableMetaHelper, "tableMeta");
-    tscObjRef = taosOpenRef(4096, tscFreeRegisteredSqlObj);
+    tscObjRef = taosOpenRef(40960, tscFreeRegisteredSqlObj);
   }
 
   tscRefId = taosOpenRef(200, tscCloseTscObj);

src/common/inc/tglobal.h

@@ -56,6 +56,7 @@ extern char     tsTempDir[];
 
 //query buffer management
 extern int32_t  tsQueryBufferSize;      // maximum allowed usage buffer for each data node during query processing
+extern int32_t  tsHalfCoresForQuery;         // only 50% will be used in query processing
 
 // client
 extern int32_t tsTableMetaKeepTimer;

src/common/src/tglobal.c

@@ -107,6 +107,9 @@ int64_t tsMaxRetentWindow = 24 * 3600L;  // maximum time window tolerance
 // positive value (in MB)
 int32_t tsQueryBufferSize = -1;
 
+// only 50% cpu will be used in query processing in dnode
+int32_t tsHalfCoresForQuery = 0;
+
 // db parameters
 int32_t tsCacheBlockSize = TSDB_DEFAULT_CACHE_BLOCK_SIZE;
 int32_t tsBlocksPerVnode = TSDB_DEFAULT_TOTAL_BLOCKS;
@@ -884,6 +887,16 @@ static void doInitGlobalConfig(void) {
   cfg.unitType = TAOS_CFG_UTYPE_BYTE;
   taosInitConfigOption(cfg);
 
+  cfg.option = "halfCoresForQuery";
+  cfg.ptr = &tsHalfCoresForQuery;
+  cfg.valType = TAOS_CFG_VTYPE_INT32;
+  cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
+  cfg.minValue = 0;
+  cfg.maxValue = 1;
+  cfg.ptrLength = 1;
+  cfg.unitType = TAOS_CFG_UTYPE_NONE;
+  taosInitConfigOption(cfg);
+
   // locale & charset
   cfg.option = "timezone";
   cfg.ptr = tsTimezone;
@@ -1290,7 +1303,7 @@ static void doInitGlobalConfig(void) {
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosInitConfigOption(cfg);
 
-  cfg.option = "tscEnableRecordSql";
+  cfg.option = "enableRecordSql";
   cfg.ptr = &tsTscEnableRecordSql;
   cfg.valType = TAOS_CFG_VTYPE_INT32;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG;

src/connector/python/linux/python2/setup.py

@@ -5,7 +5,7 @@ with open("README.md", "r") as fh:
 
 setuptools.setup(
     name="taos",
-    version="2.0.2",
+    version="2.0.3",
     author="Taosdata Inc.",
     author_email="support@taosdata.com",
     description="TDengine python client package",

src/connector/python/linux/python2/taos/__init__.py

@@ -3,7 +3,7 @@ from .connection import TDengineConnection
 from .cursor import TDengineCursor
 
 # Globals
-apilevel = '2.0'
+apilevel = '2.0.3'
 threadsafety = 0
 paramstyle = 'pyformat'
 

src/connector/python/linux/python2/taos/cinterface.py

@@ -81,6 +81,7 @@ def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     if num_of_rows > 0:
         return [ None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode('utf-8') for ele in (ctypes.cast(data,  ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
     else:
@@ -106,6 +107,7 @@ def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     res=[]
     if num_of_rows > 0:
         for i in range(abs(num_of_rows)):

src/connector/python/linux/python2/taos/cursor.py

@@ -26,7 +26,7 @@ class TDengineCursor(object):
     """
 
     def __init__(self, connection=None):
-        self._description = None
+        self._description = []
         self._rowcount = -1
         self._connection = None
         self._result = None
@@ -234,7 +234,7 @@ class TDengineCursor(object):
     def _reset_result(self):
         """Reset the result to unused version.
         """
-        self._description = None
+        self._description = []
         self._rowcount = -1
         if self._result is not None:
             CTaosInterface.freeResult(self._result)

src/connector/python/linux/python3/setup.py

@@ -5,7 +5,7 @@ with open("README.md", "r") as fh:
 
 setuptools.setup(
     name="taos",
-    version="2.0.2",
+    version="2.0.3",
     author="Taosdata Inc.",
     author_email="support@taosdata.com",
     description="TDengine python client package",

src/connector/python/linux/python3/taos/__init__.py

@@ -3,7 +3,7 @@ from .connection import TDengineConnection
 from .cursor import TDengineCursor
 
 # Globals
-apilevel = '2.0'
+apilevel = '2.0.3'
 threadsafety = 0
 paramstyle = 'pyformat'
 

src/connector/python/linux/python3/taos/cinterface.py

@@ -81,6 +81,7 @@ def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     if num_of_rows > 0:
         return [ None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode('utf-8') for ele in (ctypes.cast(data,  ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
     else:
@@ -106,6 +107,7 @@ def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     res=[]
     if num_of_rows > 0:
         for i in range(abs(num_of_rows)):

src/connector/python/linux/python3/taos/cursor.py

@@ -27,7 +27,7 @@ class TDengineCursor(object):
     """
 
     def __init__(self, connection=None):
-        self._description = None
+        self._description = []
         self._rowcount = -1
         self._connection = None
         self._result = None
@@ -242,7 +242,7 @@ class TDengineCursor(object):
     def _reset_result(self):
         """Reset the result to unused version.
         """
-        self._description = None
+        self._description = []
         self._rowcount = -1
         if self._result is not None:
             CTaosInterface.freeResult(self._result)

src/connector/python/windows/python2/setup.py

@@ -5,7 +5,7 @@ with open("README.md", "r") as fh:
 
 setuptools.setup(
     name="taos",
-    version="2.0.2",
+    version="2.0.3",
     author="Taosdata Inc.",
     author_email="support@taosdata.com",
     description="TDengine python client package",

src/connector/python/windows/python2/taos/__init__.py

@@ -3,7 +3,7 @@ from .connection import TDengineConnection
 from .cursor import TDengineCursor
 
 # Globals
-apilevel = '2.0'
+apilevel = '2.0.3'
 threadsafety = 0
 paramstyle = 'pyformat'
 

src/connector/python/windows/python2/taos/cinterface.py

@@ -81,6 +81,7 @@ def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     if num_of_rows > 0:
         return [ None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode('utf-8') for ele in (ctypes.cast(data,  ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
     else:
@@ -106,6 +107,7 @@ def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     res=[]
     if num_of_rows > 0:
         for i in range(abs(num_of_rows)):

src/connector/python/windows/python2/taos/cursor.py

@@ -27,7 +27,7 @@ class TDengineCursor(object):
     """
 
     def __init__(self, connection=None):
-        self._description = None
+        self._description = []
         self._rowcount = -1
         self._connection = None
         self._result = None
@@ -193,7 +193,7 @@ class TDengineCursor(object):
     def _reset_result(self):
         """Reset the result to unused version.
         """
-        self._description = None
+        self._description = []
         self._rowcount = -1
         if self._result is not None:
             CTaosInterface.freeResult(self._result)

src/connector/python/windows/python3/setup.py

@@ -5,7 +5,7 @@ with open("README.md", "r") as fh:
 
 setuptools.setup(
     name="taos",
-    version="2.0.2",
+    version="2.0.3",
     author="Taosdata Inc.",
     author_email="support@taosdata.com",
     description="TDengine python client package",

src/connector/python/windows/python3/taos/__init__.py

@@ -3,7 +3,7 @@ from .connection import TDengineConnection
 from .cursor import TDengineCursor
 
 # Globals
-apilevel = '2.0'
+apilevel = '2.0.3'
 threadsafety = 0
 paramstyle = 'pyformat'
 

src/connector/python/windows/python3/taos/cinterface.py

@@ -81,6 +81,7 @@ def _crow_double_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     if num_of_rows > 0:
         return [ None if ele.value[0:1] == FieldType.C_BINARY_NULL else ele.value.decode('utf-8') for ele in (ctypes.cast(data,  ctypes.POINTER(ctypes.c_char * nbytes)))[:abs(num_of_rows)]]
     else:
@@ -108,6 +109,7 @@ def _crow_nchar_to_python(data, num_of_rows, nbytes=None, micro=False):
 def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, micro=False):
     """Function to convert C binary row to python row
     """
+    assert(nbytes is not None)
     res=[]
     if num_of_rows > 0:
         for i in range(abs(num_of_rows)):

src/connector/python/windows/python3/taos/cursor.py

@@ -28,7 +28,7 @@ class TDengineCursor(object):
     """
 
     def __init__(self, connection=None):
-        self._description = None
+        self._description = []
         self._rowcount = -1
         self._connection = None
         self._result = None
@@ -194,7 +194,7 @@ class TDengineCursor(object):
     def _reset_result(self):
         """Reset the result to unused version.
         """
-        self._description = None
+        self._description = []
         self._rowcount = -1
         if self._result is not None:
             CTaosInterface.freeResult(self._result)

src/query/src/qExecutor.c

@@ -1372,8 +1372,12 @@ static int32_t setGroupResultOutputBuf(SQueryRuntimeEnv *pRuntimeEnv, char *pDat
   }
 
   if (type == TSDB_DATA_TYPE_BINARY || type == TSDB_DATA_TYPE_NCHAR) {
+    if (pResultRow->key == NULL) {
       pResultRow->key = malloc(varDataTLen(pData));
       varDataCopy(pResultRow->key, pData);
+    } else {
+      assert(memcmp(pResultRow->key, pData, varDataTLen(pData)) == 0);
+    }
   } else {
     pResultRow->win.skey = v;
     pResultRow->win.ekey = v;

src/query/src/qParserImpl.c

@@ -405,14 +405,29 @@ void tSQLSetColumnType(TAOS_FIELD *pField, SStrToken *type) {
         if (type->type == 0) {
           pField->bytes = 0;
         } else {
-          pField->bytes = (int16_t)(-(int32_t)type->type * TSDB_NCHAR_SIZE + VARSTR_HEADER_SIZE);
+          int32_t bytes = -(int32_t)(type->type);
+          if (bytes > (TSDB_MAX_NCHAR_LEN - VARSTR_HEADER_SIZE) / TSDB_NCHAR_SIZE) {
+            // we have to postpone reporting the error because it cannot be done here
+            // as pField->bytes is int16_t, use 'TSDB_MAX_NCHAR_LEN + 1' to avoid overflow
+            bytes = TSDB_MAX_NCHAR_LEN + 1;
+          } else {
+            bytes = bytes * TSDB_NCHAR_SIZE + VARSTR_HEADER_SIZE;
+          }
+          pField->bytes = (int16_t)bytes;
         }
       } else if (i == TSDB_DATA_TYPE_BINARY) {
         /* for binary, the TOKENTYPE is the length of binary */
         if (type->type == 0) {
           pField->bytes = 0;
         } else {
-          pField->bytes = (int16_t) (-(int32_t) type->type + VARSTR_HEADER_SIZE);
+          int32_t bytes = -(int32_t)(type->type);
+          if (bytes > TSDB_MAX_BINARY_LEN - VARSTR_HEADER_SIZE) {
+            // refer comment for NCHAR above
+            bytes = TSDB_MAX_BINARY_LEN + 1;
+          } else {
+            bytes += VARSTR_HEADER_SIZE;
+          }
+          pField->bytes = (int16_t)bytes;
         } 
       }
       break;

src/tsdb/src/tsdbMemTable.c

@@ -786,10 +786,10 @@ static int tsdbCheckTableSchema(STsdbRepo *pRepo, SSubmitBlk *pBlock, STable *pT
     if (tsdbGetTableSchemaImpl(pTable, false, false, pBlock->sversion) == NULL) {
       tsdbError("vgId:%d invalid submit schema version %d to table %s tid %d from client", REPO_ID(pRepo),
                 pBlock->sversion, TABLE_CHAR_NAME(pTable), TABLE_TID(pTable));
-    }
       terrno = TSDB_CODE_TDB_IVD_TB_SCHEMA_VERSION;
       return -1;
     }
+  }
 
   return 0;
 }

src/util/src/tconfig.c

@@ -19,9 +19,7 @@
 #include "taoserror.h"
 #include "tconfig.h"
 #include "tglobal.h"
-#include "tkey.h"
 #include "tulog.h"
-#include "tsocket.h"
 #include "tsystem.h"
 #include "tutil.h"
 

src/util/src/tref.c

@@ -423,14 +423,9 @@ static int taosDecRefCount(int rsetId, int64_t rid, int remove) {
       if (pNode->next) {
         pNode->next->prev = pNode->prev; 
       } 
-		
-      (*pSet->fp)(pNode->p); 
-
-      uTrace("rsetId:%d p:%p rid:%" PRId64 " is removed, count:%d, free mem: %p", rsetId, pNode->p, rid, pSet->count, pNode);
-      free(pNode);
       released = 1;
     } else {
-      uTrace("rsetId:%d p:%p rid:%" PRId64 " is released, count:%d", rsetId, pNode->p, rid, pNode->count);
+       uTrace("rsetId:%d p:%p rid:%" PRId64 " is released", rsetId, pNode->p, rid); 
     }
   } else {
     uTrace("rsetId:%d rid:%" PRId64 " is not there, failed to release/remove", rsetId, rid); 
@@ -440,7 +435,13 @@ static int taosDecRefCount(int rsetId, int64_t rid, int remove) {
 
   taosUnlockList(pSet->lockedBy+hash);
 
-  if (released) taosDecRsetCount(pSet);
+  if (released) {
+    uTrace("rsetId:%d p:%p rid:%" PRId64 " is removed, count:%d, free mem: %p", rsetId, pNode->p, rid, pSet->count, pNode);
+    (*pSet->fp)(pNode->p); 
+    free(pNode);
+
+    taosDecRsetCount(pSet);
+  } 
 
   return code;
 }

src/vnode/src/vnodeRead.c

@@ -275,8 +275,11 @@ static int32_t vnodeProcessQueryMsg(SVnodeObj *pVnode, SVReadMsg *pRead) {
 
     vDebug("vgId:%d, QInfo:%p, dnode continues to exec query", pVnode->vgId, *qhandle);
 
-
-#if _NON_BLOCKING_RETRIEVE
+    // In the retrieve blocking model, only 50% CPU will be used in query processing
+    if (tsHalfCoresForQuery) {
+      qTableQuery(*qhandle);  // do execute query
+      qReleaseQInfo(pVnode->qMgmt, (void **)&qhandle, false);
+    } else {
       bool freehandle = false;
       bool buildRes = qTableQuery(*qhandle);  // do execute query
 
@@ -295,9 +298,8 @@ static int32_t vnodeProcessQueryMsg(SVnodeObj *pVnode, SVReadMsg *pRead) {
         // NOTE: set return code to be TSDB_CODE_QRY_HAS_RSP to notify dnode to return msg to client
         code = TSDB_CODE_QRY_HAS_RSP;
       } else {
-      void* h1 = qGetResultRetrieveMsg(*qhandle);
+        void *h1 = qGetResultRetrieveMsg(*qhandle);
         assert(h1 == NULL);
-
         freehandle = qQueryCompleted(*qhandle);
       }
 
@@ -306,10 +308,7 @@ static int32_t vnodeProcessQueryMsg(SVnodeObj *pVnode, SVReadMsg *pRead) {
       if (freehandle || (!buildRes)) {
         qReleaseQInfo(pVnode->qMgmt, (void **)&qhandle, freehandle);
       }
-#else
-    qTableQuery(*qhandle);  // do execute query
-    qReleaseQInfo(pVnode->qMgmt, (void **)&qhandle, false);
-#endif
+    }
   }
 
   return code;
@@ -375,14 +374,16 @@ static int32_t vnodeProcessFetchMsg(SVnodeObj *pVnode, SVReadMsg *pRead) {
     freeHandle = true;
   } else {  // result is not ready, return immediately
     assert(buildRes == true);
-#if _NON_BLOCKING_RETRIEVE
+
+    // Only effects in the non-blocking model
+    if (!tsHalfCoresForQuery) {
       if (!buildRes) {
         assert(pRead->rpcHandle != NULL);
 
         qReleaseQInfo(pVnode->qMgmt, (void **)&handle, false);
         return TSDB_CODE_QRY_NOT_READY;
       }
-#endif
+    }
 
     // ahandle is the sqlObj pointer
     code = vnodeDumpQueryResult(pRet, pVnode, handle, &freeHandle, pRead->rpcHandle);

tests/pytest/fulltest.sh

@@ -160,6 +160,7 @@ python3 ./test.py -f query/bug1874.py
 python3 ./test.py -f query/bug1875.py
 python3 ./test.py -f query/bug1876.py
 python3 ./test.py -f query/bug2218.py
+python3 ./test.py -f query/sliding.py 
 
 #stream
 python3 ./test.py -f stream/metric_1.py

tests/pytest/query/queryInterval.py

@@ -16,6 +16,7 @@ import taos
 from util.log import tdLog
 from util.cases import tdCases
 from util.sql import tdSql
+from util.dnodes import tdDnodes
 
 
 class TDTestCase:
@@ -72,6 +73,19 @@ class TDTestCase:
         tdSql.checkData(6, 0, "2020-09-16 00:00:00")
         tdSql.checkData(6, 1, 222.0)
 
+        # test case for https://jira.taosdata.com:18080/browse/TD-2298
+        tdSql.execute("create database test keep 36500")
+        tdSql.execute("use test")
+        tdSql.execute("create table t (ts timestamp, voltage int)")
+        for i in range(10000):
+            tdSql.execute("insert into t values(%d, 0)" % (1000000 + i * 6000))
+        
+        tdDnodes.stop(1)
+        tdDnodes.start(1)
+        tdSql.query("select last(*) from t interval(1s)")
+        tdSql.checkRows(10000)
+        
+
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)