diff --git a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
index f0ece6f44a27dfeaa8918043f9d7be6bd40ceed4..0439e0f168937c10543f453b556e468b0535a556 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
@@ -355,7 +355,9 @@ int32_t tLDataIterOpen2(struct SLDataIter *pIter, SSttFileReader *pReader, int32
   return code;
 }
 
-void tLDataIterClose(SLDataIter *pIter) { /*taosMemoryFree(pIter); */}
+void tLDataIterClose2(SLDataIter *pIter) {
+  tsdbSttFileReaderClose(&pIter->pReader);
+}
 
 void tLDataIterNextBlock(SLDataIter *pIter, const char *idStr) {
   int32_t step = pIter->backward ? -1 : 1;
diff --git a/source/dnode/vnode/src/tsdb/tsdbRead2.c b/source/dnode/vnode/src/tsdb/tsdbRead2.c
index c8b8730a750be4c4bbbe182eb1d202601da72540..718e065e945caa5fe3539a4baf96f1171ab0b78e 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead2.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead2.c
@@ -1074,7 +1074,7 @@ static int32_t doLoadFileBlock(STsdbReader* pReader, SArray* pIndexList, SBlockN
 
   double el = (taosGetTimestampUs() - st) / 1000.0;
   tsdbDebug(
-      "load block of %ld tables completed, blocks:%d in %d tables, last-files:%d, block-info-size:%.2f Kb, elapsed "
+      "load block of %d tables completed, blocks:%d in %d tables, last-files:%d, block-info-size:%.2f Kb, elapsed "
       "time:%.2f ms %s",
       numOfTables, pBlockNum->numOfBlocks, (int32_t)taosArrayGetSize(pTableScanInfoList), pBlockNum->numOfLastFiles,
       sizeInDisk / 1000.0, el, pReader->idStr);
@@ -4746,6 +4746,7 @@ void tsdbReaderClose2(STsdbReader* pReader) {
   if (pReader->status.pTableMap != NULL) {
     destroyAllBlockScanInfo(pReader->status.pTableMap);
     clearBlockScanInfoBuf(&pReader->blockInfoBuf);
+    pReader->status.pTableMap = NULL;
   }
 
   if (pReader->pFileReader != NULL) {