fix(stream): stream rsp to retrieve msg if data is empty

include/common/tcommon.h

@@ -47,6 +47,7 @@ typedef enum EStreamType {
   STREAM_GET_ALL,
   STREAM_DELETE,
   STREAM_RETRIEVE,
+  STREAM_PUSH_DATA,
 } EStreamType;
 
 typedef struct {
@@ -71,7 +72,7 @@ typedef struct SColumnDataAgg {
 
 typedef struct SDataBlockInfo {
   STimeWindow window;
-  int32_t     rows;     // todo hide this attribute
+  int32_t     rows;  // todo hide this attribute
   int32_t     rowSize;
   uint64_t    uid;      // the uid of table, from which current data block comes
   uint16_t    blockId;  // block id, generated by physical planner

include/libs/stream/tstream.h

@@ -58,6 +58,7 @@ enum {
 enum {
   STREAM_INPUT__DATA_SUBMIT = 1,
   STREAM_INPUT__DATA_BLOCK,
+  STREAM_INPUT__DATA_RETRIEVE,
   STREAM_INPUT__TRIGGER,
   STREAM_INPUT__CHECKPOINT,
   STREAM_INPUT__DROP,

source/libs/stream/src/stream.c

@@ -111,7 +111,7 @@ int32_t streamTaskEnqueue(SStreamTask* pTask, SStreamDispatchReq* pReq, SRpcMsg*
 
   // enqueue
   if (pData != NULL) {
-    pData->type = STREAM_DATA_TYPE_SSDATA_BLOCK;
+    pData->type = STREAM_INPUT__DATA_BLOCK;
     pData->srcVgId = pReq->dataSrcVgId;
     // decode
     /*pData->blocks = pReq->data;*/
@@ -146,7 +146,7 @@ int32_t streamTaskEnqueueRetrieve(SStreamTask* pTask, SStreamRetrieveReq* pReq,
 
   // enqueue
   if (pData != NULL) {
-    pData->type = STREAM_DATA_TYPE_SSDATA_BLOCK;
+    pData->type = STREAM_INPUT__DATA_RETRIEVE;
     pData->srcVgId = 0;
     // decode
     /*pData->blocks = pReq->data;*/
@@ -170,7 +170,7 @@ int32_t streamTaskEnqueueRetrieve(SStreamTask* pTask, SStreamRetrieveReq* pReq,
   pCont->rspToTaskId = pReq->srcTaskId;
   pCont->rspFromTaskId = pReq->dstTaskId;
   pRsp->pCont = buf;
-  pRsp->contLen = sizeof(SMsgHead) + sizeof(SStreamDispatchRsp);
+  pRsp->contLen = sizeof(SMsgHead) + sizeof(SStreamRetrieveRsp);
   tmsgSendRsp(pRsp);
   return status == TASK_INPUT_STATUS__NORMAL ? 0 : -1;
 }

source/libs/stream/src/streamDispatch.c

@@ -300,7 +300,7 @@ int32_t streamDispatch(SStreamTask* pTask, SMsgCb* pMsgCb) {
     atomic_store_8(&pTask->outputStatus, TASK_OUTPUT_STATUS__NORMAL);
     return 0;
   }
-  ASSERT(pBlock->type == STREAM_DATA_TYPE_SSDATA_BLOCK);
+  ASSERT(pBlock->type == STREAM_INPUT__DATA_BLOCK);
 
   qInfo("stream continue dispatching: task %d", pTask->taskId);
 

source/libs/stream/src/streamExec.c

@@ -17,6 +17,7 @@
 
 static int32_t streamTaskExecImpl(SStreamTask* pTask, void* data, SArray* pRes) {
   void* exec = pTask->exec.executor;
+  bool  hasData = false;
 
   // set input
   SStreamQueueItem* pItem = (SStreamQueueItem*)data;
@@ -27,7 +28,7 @@ static int32_t streamTaskExecImpl(SStreamTask* pTask, void* data, SArray* pRes)
     ASSERT(pTask->isDataScan);
     SStreamDataSubmit* pSubmit = (SStreamDataSubmit*)data;
     qSetStreamInput(exec, pSubmit->data, STREAM_DATA_TYPE_SUBMIT_BLOCK, false);
-  } else if (pItem->type == STREAM_INPUT__DATA_BLOCK) {
+  } else if (pItem->type == STREAM_INPUT__DATA_BLOCK || pItem->type == STREAM_INPUT__DATA_RETRIEVE) {
     SStreamDataBlock* pBlock = (SStreamDataBlock*)data;
     SArray*           blocks = pBlock->blocks;
     qSetMultiStreamInput(exec, blocks->pData, blocks->size, STREAM_DATA_TYPE_SSDATA_BLOCK, false);
@@ -43,7 +44,16 @@ static int32_t streamTaskExecImpl(SStreamTask* pTask, void* data, SArray* pRes)
     if (qExecTask(exec, &output, &ts) < 0) {
       ASSERT(false);
     }
-    if (output == NULL) break;
+    if (output == NULL) {
+      if (pItem->type == STREAM_INPUT__DATA_RETRIEVE && !hasData) {
+        SSDataBlock block = {0};
+        block.info.type = STREAM_PUSH_DATA;
+        block.info.childId = pTask->selfChildId;
+        taosArrayPush(pRes, &block);
+      }
+      break;
+    }
+    hasData = true;
 
     if (output->info.type == STREAM_RETRIEVE) {
       if (streamBroadcastToChildren(pTask, output) < 0) {

source/libs/wal/src/walWrite.c

@@ -42,6 +42,9 @@ int32_t walRestoreFromSnapshot(SWal *pWal, int64_t ver) {
       char          fnameStr[WAL_FILE_LEN];
       walBuildLogName(pWal, pFileInfo->firstVer, fnameStr);
       taosRemoveFile(fnameStr);
+
+      walBuildIdxName(pWal, pFileInfo->firstVer, fnameStr);
+      taosRemoveFile(fnameStr);
     }
   }
   walRemoveMeta(pWal);
@@ -105,7 +108,7 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
   }
 
   walBuildIdxName(pWal, walGetCurFileFirstVer(pWal), fnameStr);
-  TdFilePtr pIdxTFile = taosOpenFile(fnameStr, TD_FILE_WRITE | TD_FILE_READ);
+  TdFilePtr pIdxTFile = taosOpenFile(fnameStr, TD_FILE_WRITE | TD_FILE_READ | TD_FILE_APPEND);
 
   if (pIdxTFile == NULL) {
     taosThreadMutexUnlock(&pWal->mutex);
@@ -126,7 +129,7 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
   ASSERT(entry.ver == ver);
 
   walBuildLogName(pWal, walGetCurFileFirstVer(pWal), fnameStr);
-  TdFilePtr pLogTFile = taosOpenFile(fnameStr, TD_FILE_WRITE | TD_FILE_READ);
+  TdFilePtr pLogTFile = taosOpenFile(fnameStr, TD_FILE_WRITE | TD_FILE_READ | TD_FILE_APPEND);
   if (pLogTFile == NULL) {
     // TODO
     taosThreadMutexUnlock(&pWal->mutex);
@@ -307,8 +310,8 @@ int walRoll(SWal *pWal) {
 
 static int walWriteIndex(SWal *pWal, int64_t ver, int64_t offset) {
   SWalIdxEntry entry = {.ver = ver, .offset = offset};
-  /*int64_t      idxOffset = taosLSeekFile(pWal->pWriteIdxTFile, 0, SEEK_CUR);*/
-  /*wDebug("write index: ver: %ld, offset: %ld, at %ld", ver, offset, idxOffset);*/
+  int64_t      idxOffset = taosLSeekFile(pWal->pWriteIdxTFile, 0, SEEK_END);
+  wDebug("write index: ver: %ld, offset: %ld, at %ld", ver, offset, idxOffset);
   int64_t size = taosWriteFile(pWal->pWriteIdxTFile, &entry, sizeof(SWalIdxEntry));
   if (size != sizeof(SWalIdxEntry)) {
     terrno = TAOS_SYSTEM_ERROR(errno);