fix(stream): limit the batch size.

source/libs/stream/src/streamExec.c

@@ -15,7 +15,8 @@
 
 #include "streamInc.h"
 
-#define MAX_STREAM_EXEC_BATCH_NUM 10240
+// maximum allowed processed block batches. One block may include several submit blocks
+#define MAX_STREAM_EXEC_BATCH_NUM 128
 #define MIN_STREAM_EXEC_BATCH_NUM 16
 
 bool streamTaskShouldStop(const SStreamStatus* pStatus) {
@@ -297,6 +298,7 @@ int32_t streamExecForAll(SStreamTask* pTask) {
           pInput = newRet;
           streamQueueProcessSuccess(pTask->inputQueue);
           if (batchSize > MAX_STREAM_EXEC_BATCH_NUM) {
+            qDebug("maximum batch limit:%d reached, processing, %s", MAX_STREAM_EXEC_BATCH_NUM, pTask->id.idStr);
             break;
           }
         }