From 6e06701aad9b5648d32af47411e36673fd38d9e6 Mon Sep 17 00:00:00 2001
From: Hongze Cheng <hzcheng@taosdata.com>
Date: Mon, 6 Jul 2020 16:35:13 +0800
Subject: [PATCH] fix unitiailized error

---
 src/query/src/qExecutor.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index bd8c9951e1..d41c9fbba8 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -2173,6 +2173,7 @@ static void ensureOutputBuffer(SQueryRuntimeEnv* pRuntimeEnv, SDataBlockInfo* pB
         if (tmp == NULL) {  // todo handle the oom
           assert(0);
         } else {
+          memset(tmp + sizeof(tFilePage) + bytes * pRec->rows, 0, (newSize - pRec->rows) * bytes);
           pQuery->sdata[i] = (tFilePage *)tmp;
         }
         
-- 
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