refactor(stream): optimize auto create child table

source/dnode/vnode/src/tq/tqSink.c

@@ -293,7 +293,6 @@ void tqTableSink1(SStreamTask* pTask, void* vnode, int64_t ver, void* data) {
   SSchemaWrapper* pSchemaWrapper = pTask->tbSink.pSchemaWrapper;
 
   int32_t blockSz = taosArrayGetSize(pBlocks);
-  bool    createTb = true;
 
   SArray* tagArray = taosArrayInit(1, sizeof(STagVal));
   if (!tagArray) {
@@ -303,6 +302,7 @@ void tqTableSink1(SStreamTask* pTask, void* vnode, int64_t ver, void* data) {
 
   tqDebug("vgId:%d, task %d write into table, block num: %d", TD_VID(pVnode), pTask->taskId, blockSz);
   for (int32_t i = 0; i < blockSz; i++) {
+    bool         createTb = true;
     SSDataBlock* pDataBlock = taosArrayGet(pBlocks, i);
     if (pDataBlock->info.type == STREAM_DELETE_RESULT) {
       SBatchDeleteReq deleteReq = {0};
@@ -337,83 +337,115 @@ void tqTableSink1(SStreamTask* pTask, void* vnode, int64_t ver, void* data) {
         tqDebug("failed to put delete req into write-queue since %s", terrstr());
       }
     } else {
-      SVCreateTbReq createTbReq = {0};
-
-      // set const
-      createTbReq.flags = 0;
-      createTbReq.type = TSDB_CHILD_TABLE;
-      createTbReq.ctb.suid = suid;
-
-      // set super table name
-      SName name = {0};
-      tNameFromString(&name, stbFullName, T_NAME_ACCT | T_NAME_DB | T_NAME_TABLE);
-      createTbReq.ctb.stbName = strdup((char*)tNameGetTableName(&name));  // strdup(stbFullName);
-
-      // set tag content
-      taosArrayClear(tagArray);
-      STagVal tagVal = {
-          .cid = taosArrayGetSize(pDataBlock->pDataBlock) + 1,
-          .type = TSDB_DATA_TYPE_UBIGINT,
-          .i64 = (int64_t)pDataBlock->info.groupId,
-      };
-      taosArrayPush(tagArray, &tagVal);
-      createTbReq.ctb.tagNum = taosArrayGetSize(tagArray);
-
-      STag* pTag = NULL;
-      tTagNew(tagArray, 1, false, &pTag);
-      if (pTag == NULL) {
-        terrno = TSDB_CODE_OUT_OF_MEMORY;
-        taosArrayDestroy(tagArray);
-        tdDestroySVCreateTbReq(&createTbReq);
-        return;
-      }
-      createTbReq.ctb.pTag = (uint8_t*)pTag;
-
-      // set tag name
-      SArray* tagName = taosArrayInit(1, TSDB_COL_NAME_LEN);
-      char    tagNameStr[TSDB_COL_NAME_LEN] = {0};
-      strcpy(tagNameStr, "group_id");
-      taosArrayPush(tagName, tagNameStr);
-      createTbReq.ctb.tagName = tagName;
-
-      // set table name
+      char* ctbName = NULL;
+      // set child table name
       if (pDataBlock->info.parTbName[0]) {
-        createTbReq.name = strdup(pDataBlock->info.parTbName);
+        ctbName = strdup(pDataBlock->info.parTbName);
       } else {
-        createTbReq.name = buildCtbNameByGroupId(stbFullName, pDataBlock->info.groupId);
+        ctbName = buildCtbNameByGroupId(stbFullName, pDataBlock->info.groupId);
       }
 
-      int32_t schemaLen;
-      int32_t code;
-      tEncodeSize(tEncodeSVCreateTbReq, &createTbReq, schemaLen, code);
-      if (code < 0) {
-        tdDestroySVCreateTbReq(&createTbReq);
-        taosArrayDestroy(tagArray);
-        return;
-      }
+      int32_t schemaLen = 0;
+      void*   schemaStr = NULL;
+
+      int64_t     uid = 0;
+      SMetaReader mr = {0};
+      metaReaderInit(&mr, pVnode->pMeta, 0);
+      if (metaGetTableEntryByName(&mr, ctbName) < 0) {
+        tqDebug("vgId:%d, stream write into %s, table auto created", TD_VID(pVnode), ctbName);
+
+        SVCreateTbReq createTbReq = {0};
+
+        // set const
+        createTbReq.flags = 0;
+        createTbReq.type = TSDB_CHILD_TABLE;
+        createTbReq.ctb.suid = suid;
+
+        // set super table name
+        SName name = {0};
+        tNameFromString(&name, stbFullName, T_NAME_ACCT | T_NAME_DB | T_NAME_TABLE);
+        createTbReq.ctb.stbName = strdup((char*)tNameGetTableName(&name));  // strdup(stbFullName);
+        createTbReq.name = ctbName;
+        ctbName = NULL;
+
+        // set tag content
+        taosArrayClear(tagArray);
+        STagVal tagVal = {
+            .cid = taosArrayGetSize(pDataBlock->pDataBlock) + 1,
+            .type = TSDB_DATA_TYPE_UBIGINT,
+            .i64 = (int64_t)pDataBlock->info.groupId,
+        };
+        taosArrayPush(tagArray, &tagVal);
+        createTbReq.ctb.tagNum = taosArrayGetSize(tagArray);
+
+        STag* pTag = NULL;
+        tTagNew(tagArray, 1, false, &pTag);
+        if (pTag == NULL) {
+          terrno = TSDB_CODE_OUT_OF_MEMORY;
+          taosArrayDestroy(tagArray);
+          tdDestroySVCreateTbReq(&createTbReq);
+          return;
+        }
+        createTbReq.ctb.pTag = (uint8_t*)pTag;
+
+        // set tag name
+        SArray* tagName = taosArrayInit(1, TSDB_COL_NAME_LEN);
+        char    tagNameStr[TSDB_COL_NAME_LEN] = {0};
+        strcpy(tagNameStr, "group_id");
+        taosArrayPush(tagName, tagNameStr);
+        createTbReq.ctb.tagName = tagName;
+
+        int32_t code;
+        tEncodeSize(tEncodeSVCreateTbReq, &createTbReq, schemaLen, code);
+        if (code < 0) {
+          tdDestroySVCreateTbReq(&createTbReq);
+          taosArrayDestroy(tagArray);
+          return;
+        }
 
-      // save schema str
-      void* schemaStr = taosMemoryMalloc(schemaLen);
-      if (schemaStr == NULL) {
-        terrno = TSDB_CODE_OUT_OF_MEMORY;
-        tdDestroySVCreateTbReq(&createTbReq);
-        taosArrayDestroy(tagArray);
-        return;
-      }
+        // set schema str
+        schemaStr = taosMemoryMalloc(schemaLen);
+        if (schemaStr == NULL) {
+          terrno = TSDB_CODE_OUT_OF_MEMORY;
+          tdDestroySVCreateTbReq(&createTbReq);
+          taosArrayDestroy(tagArray);
+          return;
+        }
 
-      SEncoder encoder = {0};
-      tEncoderInit(&encoder, schemaStr, schemaLen);
-      code = tEncodeSVCreateTbReq(&encoder, &createTbReq);
-      if (code < 0) {
-        terrno = TSDB_CODE_OUT_OF_MEMORY;
-        tdDestroySVCreateTbReq(&createTbReq);
-        taosArrayDestroy(tagArray);
+        SEncoder encoder = {0};
+        tEncoderInit(&encoder, schemaStr, schemaLen);
+        code = tEncodeSVCreateTbReq(&encoder, &createTbReq);
+        if (code < 0) {
+          terrno = TSDB_CODE_OUT_OF_MEMORY;
+          tdDestroySVCreateTbReq(&createTbReq);
+          taosArrayDestroy(tagArray);
+          tEncoderClear(&encoder);
+          taosMemoryFree(schemaStr);
+          return;
+        }
         tEncoderClear(&encoder);
-        taosMemoryFree(schemaStr);
-        return;
+        tdDestroySVCreateTbReq(&createTbReq);
+      } else {
+        if (mr.me.type != TSDB_CHILD_TABLE) {
+          tqError("vgId:%d, failed to write into %s, since table type incorrect, type %d", TD_VID(pVnode), ctbName,
+                  mr.me.type);
+          metaReaderClear(&mr);
+          taosMemoryFree(ctbName);
+          continue;
+        }
+        if (mr.me.ctbEntry.suid != suid) {
+          tqError("vgId:%d, failed to write into %s, since suid mismatch, expect suid: %ld, actual suid %ld",
+                  TD_VID(pVnode), ctbName, suid, mr.me.ctbEntry);
+          metaReaderClear(&mr);
+          taosMemoryFree(ctbName);
+          continue;
+        }
+
+        createTb = false;
+        uid = mr.me.uid;
+        metaReaderClear(&mr);
+        taosMemoryFreeClear(ctbName);
       }
-      tEncoderClear(&encoder);
-      tdDestroySVCreateTbReq(&createTbReq);
 
       int32_t cap = sizeof(SSubmitReq);
 
@@ -445,9 +477,11 @@ void tqTableSink1(SStreamTask* pTask, void* vnode, int64_t ver, void* data) {
         memcpy(blkSchema, schemaStr, schemaLen);
         blkHead->schemaLen = htonl(schemaLen);
         rowData = POINTER_SHIFT(blkSchema, schemaLen);
+      } else {
+        blkHead->uid = uid;
       }
 
-      taosMemoryFree(schemaStr);
+      taosMemoryFreeClear(schemaStr);
 
       for (int32_t j = 0; j < rows; j++) {
         SRowBuilder rb = {0};