From 0bbe049e58110767b60b3ed940ea402bfea175e7 Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Thu, 3 Nov 2022 09:08:36 +0800
Subject: [PATCH] fix: set fs and last dataf reader to null when resetting

---
 source/dnode/vnode/src/tsdb/tsdbCacheRead.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/source/dnode/vnode/src/tsdb/tsdbCacheRead.c b/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
index dbc02363ea..1396b822bf 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
@@ -333,11 +333,13 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
     code = TSDB_CODE_INVALID_PARA;
   }
 
-  _end:
+_end:
   tsdbDataFReaderClose(&pr->pDataFReaderLast);
   tsdbDataFReaderClose(&pr->pDataFReader);
 
   tsdbUntakeReadSnap(pr->pVnode->pTsdb, pr->pReadSnap, "cache-l");
+  pr->pDataFReaderLast = NULL;
+  pr->pDataFReader = NULL;
 
   for (int32_t j = 0; j < pr->numOfCols; ++j) {
     taosMemoryFree(pRes[j]);
-- 
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