enh(stream): forbid source db replica > 1

include/util/taoserror.h

@@ -342,6 +342,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_MND_INVALID_STREAM_OPTION     TAOS_DEF_ERROR_CODE(0, 0x03F2)
 #define TSDB_CODE_MND_STREAM_MUST_BE_DELETED    TAOS_DEF_ERROR_CODE(0, 0x03F3)
 #define TSDB_CODE_MND_STREAM_TASK_DROPPED       TAOS_DEF_ERROR_CODE(0, 0x03F4)
+#define TSDB_CODE_MND_MULTI_REPLICA_SOURCE_DB   TAOS_DEF_ERROR_CODE(0, 0x03F5)
 
 // mnode-sma
 #define TSDB_CODE_MND_SMA_ALREADY_EXIST         TAOS_DEF_ERROR_CODE(0, 0x0480)

source/client/src/clientTmq.c

@@ -1035,7 +1035,7 @@ int32_t tmq_subscribe(tmq_t* tmq, const tmq_list_t* topic_list) {
   SCMSubscribeReq req = {0};
   int32_t         code = -1;
 
-  tscDebug("call tmq subscribe, consumer: %" PRId64 ", topic num %d", tmq->consumerId, sz);
+  tscDebug("tmq subscribe, consumer: %" PRId64 ", topic num %d", tmq->consumerId, sz);
 
   req.consumerId = tmq->consumerId;
   tstrncpy(req.clientId, tmq->clientId, 256);
@@ -1043,7 +1043,7 @@ int32_t tmq_subscribe(tmq_t* tmq, const tmq_list_t* topic_list) {
   req.topicNames = taosArrayInit(sz, sizeof(void*));
   if (req.topicNames == NULL) goto FAIL;
 
-  tscDebug("call tmq subscribe, consumer: %" PRId64 ", topic num %d", tmq->consumerId, sz);
+  tscDebug("tmq subscribe, consumer: %" PRId64 ", topic num %d", tmq->consumerId, sz);
 
   for (int32_t i = 0; i < sz; i++) {
     char* topic = taosArrayGetP(container, i);
@@ -1570,7 +1570,6 @@ SMqTaosxRspObj* tmqBuildTaosxRspFromWrapper(SMqPollRspWrapper* pWrapper) {
 }
 
 int32_t tmqPollImpl(tmq_t* tmq, int64_t timeout) {
-  /*tscDebug("call poll");*/
   for (int i = 0; i < taosArrayGetSize(tmq->clientTopics); i++) {
     SMqClientTopic* pTopic = taosArrayGet(tmq->clientTopics, i);
     for (int j = 0; j < taosArrayGetSize(pTopic->vgs); j++) {
@@ -1794,7 +1793,6 @@ void* tmqHandleAllRsp(tmq_t* tmq, int64_t timeout, bool pollIfReset) {
 }
 
 TAOS_RES* tmq_consumer_poll(tmq_t* tmq, int64_t timeout) {
-  /*tscDebug("call poll1");*/
   void*   rspObj;
   int64_t startTime = taosGetTimestampMs();
 

source/dnode/mnode/impl/src/mndStream.c

@@ -164,7 +164,8 @@ SSdbRow *mndStreamActionDecode(SSdbRaw *pRaw) {
 STREAM_DECODE_OVER:
   taosMemoryFreeClear(buf);
   if (terrno != TSDB_CODE_SUCCESS) {
-    mError("stream:%s, failed to decode from raw:%p since %s", pStream == NULL ? "null" : pStream->name, pRaw, terrstr());
+    mError("stream:%s, failed to decode from raw:%p since %s", pStream == NULL ? "null" : pStream->name, pRaw,
+           terrstr());
     taosMemoryFreeClear(pRow);
     return NULL;
   }
@@ -624,6 +625,15 @@ static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
+  pDb = mndAcquireDb(pMnode, streamObj.sourceDb);
+  if (pDb->cfg.replications != 1) {
+    mError("stream source db must have only 1 replica, but %s has %d", pDb->name, pDb->cfg.replications);
+    terrno = TSDB_CODE_MND_MULTI_REPLICA_SOURCE_DB;
+    mndReleaseDb(pMnode, pDb);
+    pDb = NULL;
+    goto _OVER;
+  }
+
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_DB_INSIDE, pReq, "create-stream");
   if (pTrans == NULL) {
     mError("stream:%s, failed to create since %s", createStreamReq.name, terrstr());
@@ -680,7 +690,6 @@ _OVER:
   }
 
   mndReleaseStream(pMnode, pStream);
-  mndReleaseDb(pMnode, pDb);
 
   tFreeSCMCreateStreamReq(&createStreamReq);
   tFreeStreamObj(&streamObj);

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

@@ -738,7 +738,7 @@ int32_t tqProcessDeleteSubReq(STQ* pTq, int64_t version, char* msg, int32_t msgL
 
   code = tqOffsetDelete(pTq->pOffsetStore, pReq->subKey);
   if (code != 0) {
-    tqError("cannot process tq delete req %s, since no such offset", pReq->subKey);
+    tqError("cannot process tq delete req %s, since no such offset in cache", pReq->subKey);
   }
 
   if (tqMetaDeleteHandle(pTq, pReq->subKey) < 0) {

source/util/src/terror.c

@@ -281,6 +281,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_STREAM_ALREADY_EXIST,     "Stream already exists
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_STREAM_NOT_EXIST,         "Stream not exist")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_STREAM_OPTION,    "Invalid stream option")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_STREAM_MUST_BE_DELETED,   "Stream must be dropped first")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_MULTI_REPLICA_SOURCE_DB,  "Stream temporarily does not support source db having replica > 1")
 
 // mnode-sma
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_SMA_ALREADY_EXIST,        "SMA already exists")