From 1d0eae197dae26e0568f2307b2f0c70c6cf350ec Mon Sep 17 00:00:00 2001
From: "benguang.zhao" <benguang.zhao@gmail.com>
Date: Mon, 31 Oct 2022 21:06:08 +0800
Subject: [PATCH] fix: not allow to rollback WAL across snapshot point

---
 source/libs/wal/src/walWrite.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/libs/wal/src/walWrite.c b/source/libs/wal/src/walWrite.c
index 527ffa0056..e016e72471 100644
--- a/source/libs/wal/src/walWrite.c
+++ b/source/libs/wal/src/walWrite.c
@@ -101,7 +101,7 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
   taosThreadMutexLock(&pWal->mutex);
   int64_t code;
   char    fnameStr[WAL_FILE_LEN];
-  if (ver > pWal->vers.lastVer || ver < pWal->vers.commitVer) {
+  if (ver > pWal->vers.lastVer || ver < pWal->vers.commitVer || ver <= pWal->vers.snapshotVer) {
     terrno = TSDB_CODE_WAL_INVALID_VER;
     taosThreadMutexUnlock(&pWal->mutex);
     return -1;
-- 
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