diff --git a/include/common/tglobal.h b/include/common/tglobal.h
index 86395c44da..ac75b84762 100644
--- a/include/common/tglobal.h
+++ b/include/common/tglobal.h
@@ -76,6 +76,7 @@ extern int64_t tsVndCommitMaxIntervalMs;
 
 // mnode
 extern int64_t tsMndSdbWriteDelta;
+extern int64_t tsMndLogRetention;
 
 // monitor
 extern bool     tsEnableMonitor;
diff --git a/include/libs/sync/sync.h b/include/libs/sync/sync.h
index 5e37da4f3f..189484d1a6 100644
--- a/include/libs/sync/sync.h
+++ b/include/libs/sync/sync.h
@@ -35,7 +35,6 @@ extern "C" {
 #define SYNC_MAX_RECV_TIME_RANGE_MS  1200
 #define SYNC_DEL_WAL_MS              (1000 * 60)
 #define SYNC_ADD_QUORUM_COUNT        3
-#define SYNC_MNODE_LOG_RETENTION     10000
 #define SYNC_VNODE_LOG_RETENTION     (TSDB_SYNC_LOG_BUFFER_RETENTION + 1)
 #define SNAPSHOT_MAX_CLOCK_SKEW_MS   1000 * 10
 #define SNAPSHOT_WAIT_MS             1000 * 30
diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 023852c9fc..cd5486ea25 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -66,7 +66,8 @@ int32_t tsHeartbeatTimeout = 20 * 1000;
 int64_t tsVndCommitMaxIntervalMs = 600 * 1000;
 
 // mnode
-int64_t tsMndSdbWriteDelta = 2000;
+int64_t tsMndSdbWriteDelta = 200;
+int64_t tsMndLogRetention = 2000;
 
 // monitor
 bool     tsEnableMonitor = true;
@@ -461,6 +462,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddInt64(pCfg, "vndCommitMaxInterval", tsVndCommitMaxIntervalMs, 1000, 1000 * 60 * 60, 0) != 0) return -1;
 
   if (cfgAddInt64(pCfg, "mndSdbWriteDelta", tsMndSdbWriteDelta, 20, 10000, 0) != 0) return -1;
+  if (cfgAddInt64(pCfg, "mndLogRetention", tsMndLogRetention, 500, 10000, 0) != 0) return -1;
 
   if (cfgAddBool(pCfg, "monitor", tsEnableMonitor, 0) != 0) return -1;
   if (cfgAddInt32(pCfg, "monitorInterval", tsMonitorInterval, 1, 200000, 0) != 0) return -1;
@@ -810,6 +812,7 @@ static int32_t taosSetServerCfg(SConfig *pCfg) {
   tsVndCommitMaxIntervalMs = cfgGetItem(pCfg, "vndCommitMaxInterval")->i64;
 
   tsMndSdbWriteDelta = cfgGetItem(pCfg, "mndSdbWriteDelta")->i64;
+  tsMndLogRetention = cfgGetItem(pCfg, "mndLogRetention")->i64;
 
   tsStartUdfd = cfgGetItem(pCfg, "udf")->bval;
   tstrncpy(tsUdfdResFuncs, cfgGetItem(pCfg, "udfdResFuncs")->str, sizeof(tsUdfdResFuncs));
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index b07c05dcfe..9601cd6ab0 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -285,7 +285,7 @@ int32_t syncBeginSnapshot(int64_t rid, int64_t lastApplyIndex) {
 
   if (syncNodeIsMnode(pSyncNode)) {
     // mnode
-    logRetention = SYNC_MNODE_LOG_RETENTION;
+    logRetention = tsMndLogRetention;
   } else {
     // vnode
     if (pSyncNode->replicaNum > 1) {