fix write crash

source/libs/stream/src/streamStateRocksdb.c

@@ -18,8 +18,17 @@
 #include "tcommon.h"
 
 int defaultKeyComp(void* state, const char* aBuf, size_t aLen, const char* bBuf, size_t bLen) {
-  //
-  return memcmp(aBuf, bBuf, aLen);
+  int ret = memcmp(aBuf, bBuf, aLen);
+  if (ret == 0) {
+    if (aLen < bLen)
+      return -1;
+    else if (aLen > bLen)
+      return 1;
+    else
+      return 0;
+  } else {
+    return ret;
+  }
 }
 int defaultKeyEncode(void* k, char* buf) {
   int len = strlen((char*)k);

source/libs/stream/src/tstreamFileState.c

@@ -355,7 +355,7 @@ int32_t flushSnapshot(SStreamFileState* pFileState, SStreamSnapshot* pSnapshot,
       int32_t len = 0;
       sprintf(keyBuf, "%s:%" PRId64 "", taskKey, ((SStreamState*)pFileState->pFileStore)->checkPointId);
       streamFileStateEncode(&pFileState->flushMark, &valBuf, &len);
-      streamStatePutBatch(pFileState->pFileStore, "default", batch, keyBuf, valBuf, len);
+      code = streamStatePutBatch(pFileState->pFileStore, "default", batch, keyBuf, valBuf, len);
       taosMemoryFree(valBuf);
     }
     {
@@ -363,14 +363,13 @@ int32_t flushSnapshot(SStreamFileState* pFileState, SStreamSnapshot* pSnapshot,
       char    valBuf[64] = {0};
       int32_t len = 0;
       memcpy(keyBuf, taskKey, strlen(taskKey));
-      sprintf(valBuf, "%" PRId64 "", ((SStreamState*)pFileState->pFileStore)->checkPointId);
-
-      streamStatePutBatch(pFileState->pFileStore, "default", batch, keyBuf, valBuf, strlen(valBuf));
+      len = sprintf(valBuf, "%" PRId64 "", ((SStreamState*)pFileState->pFileStore)->checkPointId);
+      code = streamStatePutBatch(pFileState->pFileStore, "default", batch, keyBuf, valBuf, len);
     }
     streamStatePutBatch_rocksdb(pFileState->pFileStore, batch);
   }
-
   streamStateDestroyBatch(batch);
+
   return code;
 }
 int32_t forceRemoveCheckpoint(SStreamFileState* pFileState, int64_t checkpointId) {