From 2c7921670f154ac0e124a4f59822f888fc0028c1 Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Tue, 5 Jan 2021 23:47:42 +0800
Subject: [PATCH] [TBASE-1555]<fix>: replica shall be not greater than #dnodes

---
 src/mnode/src/mnodeDb.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mnode/src/mnodeDb.c b/src/mnode/src/mnodeDb.c
index 333844ccbe..8a03b1cd0e 100644
--- a/src/mnode/src/mnodeDb.c
+++ b/src/mnode/src/mnodeDb.c
@@ -311,6 +311,11 @@ static int32_t mnodeCheckDbCfg(SDbCfg *pCfg) {
     return TSDB_CODE_MND_INVALID_DB_OPTION;
   }
 
+  if (pCfg->replications > mnodeGetDnodesNum()) {
+    mError("no enough dnode to config replica: %d, #dnodes: %d", pCfg->replications, mnodeGetDnodesNum());
+    return TSDB_CODE_MND_INVALID_DB_OPTION;
+  }
+
   if (pCfg->quorum < TSDB_MIN_DB_REPLICA_OPTION || pCfg->quorum > TSDB_MAX_DB_REPLICA_OPTION) {
     mError("invalid db option quorum:%d valid range: [%d, %d]", pCfg->quorum, TSDB_MIN_DB_REPLICA_OPTION,
            TSDB_MAX_DB_REPLICA_OPTION);
-- 
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