From 2fa176a49d92bf8ad1e98a472b241b245a44f45e Mon Sep 17 00:00:00 2001
From: Li Minghao <castermode@gmail.com>
Date: Mon, 25 Apr 2022 07:49:40 -0700
Subject: [PATCH] when 1 replica, become leader immediately

---
 source/libs/sync/src/syncMain.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index a3068d69a9..262c9d5530 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -457,6 +457,20 @@ SSyncNode* syncNodeOpen(const SSyncInfo* pSyncInfo) {
 
 void syncNodeStart(SSyncNode* pSyncNode) {
   // start raft
+  if (pSyncNode->replicaNum == 1) {
+    syncNodeBecomeLeader(pSyncNode);
+    
+    syncNodeLog2("==state change become leader immediately==", pSyncNode);
+    
+    // Raft 3.6.2 Committing entries from previous terms
+    
+    // use this now
+    syncNodeAppendNoop(pSyncNode);
+    syncMaybeAdvanceCommitIndex(pSyncNode);  // maybe only one replica
+    return;
+  }
+
+
   syncNodeBecomeFollower(pSyncNode);
 
   // for test