fix: concurrent r/w meta

source/dnode/vnode/src/meta/metaQuery.c

@@ -19,9 +19,13 @@ void metaReaderInit(SMetaReader *pReader, SMeta *pMeta, int32_t flags) {
   memset(pReader, 0, sizeof(*pReader));
   pReader->flags = flags;
   pReader->pMeta = pMeta;
+  metaRLock(pMeta);
 }
 
 void metaReaderClear(SMetaReader *pReader) {
+  if (pReader->pMeta) {
+    metaULock(pReader->pMeta);
+  }
   tDecoderClear(&pReader->coder);
   tdbFree(pReader->pBuf);
 }

source/dnode/vnode/src/meta/metaTable.c

@@ -439,29 +439,36 @@ _exit:
 }
 
 static int metaHandleEntry(SMeta *pMeta, const SMetaEntry *pME) {
+  metaWLock(pMeta);
+
   // save to table.db
-  if (metaSaveToTbDb(pMeta, pME) < 0) return -1;
+  if (metaSaveToTbDb(pMeta, pME) < 0) goto _err;
 
   // update uid.idx
-  if (metaUpdateUidIdx(pMeta, pME) < 0) return -1;
+  if (metaUpdateUidIdx(pMeta, pME) < 0) goto _err;
 
   // update name.idx
-  if (metaUpdateNameIdx(pMeta, pME) < 0) return -1;
+  if (metaUpdateNameIdx(pMeta, pME) < 0) goto _err;
 
   if (pME->type == TSDB_CHILD_TABLE) {
     // update ctb.idx
-    if (metaUpdateCtbIdx(pMeta, pME) < 0) return -1;
+    if (metaUpdateCtbIdx(pMeta, pME) < 0) goto _err;
 
     // update tag.idx
-    if (metaUpdateTagIdx(pMeta, pME) < 0) return -1;
+    if (metaUpdateTagIdx(pMeta, pME) < 0) goto _err;
   } else {
     // update schema.db
-    if (metaSaveToSkmDb(pMeta, pME) < 0) return -1;
+    if (metaSaveToSkmDb(pMeta, pME) < 0) goto _err;
   }
 
   if (pME->type != TSDB_SUPER_TABLE) {
-    if (metaUpdateTtlIdx(pMeta, pME) < 0) return -1;
+    if (metaUpdateTtlIdx(pMeta, pME) < 0) goto _err;
   }
 
+  metaULock(pMeta);
   return 0;
+
+_err:
+  metaULock(pMeta);
+  return -1;
 }
\ No newline at end of file

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -3870,6 +3870,7 @@ int32_t tsdbQuerySTableByTagCond(void* pMeta, uint64_t uid, TSKEY skey, const ch
 
   if (metaGetTableEntryByUid(&mr, uid) < 0) {
     tsdbError("%p failed to get stable, uid:%" PRIu64 ", TID:0x%" PRIx64 " QID:0x%" PRIx64, pMeta, uid, taskId, reqId);
+    metaReaderClear(&mr);
     terrno = TSDB_CODE_PAR_TABLE_NOT_EXIST;
     goto _error;
   } else {
@@ -3880,6 +3881,7 @@ int32_t tsdbQuerySTableByTagCond(void* pMeta, uint64_t uid, TSKEY skey, const ch
     tsdbError("%p query normal tag not allowed, uid:%" PRIu64 ", TID:0x%" PRIx64 " QID:0x%" PRIx64, pMeta, uid, taskId,
               reqId);
     terrno = TSDB_CODE_OPS_NOT_SUPPORT;  // basically, this error is caused by invalid sql issued by client
+    metaReaderClear(&mr);
     goto _error;
   }