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commit c1301b082c3f9359dc510e6f5c26ff0d7a8a7e21
Author: GewuNewOne <[email protected]>
AuthorDate: Sun Apr 6 01:03:40 2025 +0800

    RATIS-2274. Newly added peer may retain outdated configuration after 
membership change, causing election failure. (#1246)
---
 .../src/main/java/org/apache/ratis/server/impl/LeaderStateImpl.java      | 1 +
 1 file changed, 1 insertion(+)

diff --git 
a/ratis-server/src/main/java/org/apache/ratis/server/impl/LeaderStateImpl.java 
b/ratis-server/src/main/java/org/apache/ratis/server/impl/LeaderStateImpl.java
index 66d2c1a1c..9e39bd0ef 100644
--- 
a/ratis-server/src/main/java/org/apache/ratis/server/impl/LeaderStateImpl.java
+++ 
b/ratis-server/src/main/java/org/apache/ratis/server/impl/LeaderStateImpl.java
@@ -797,6 +797,7 @@ class LeaderStateImpl implements LeaderState {
           follower.getLastRpcResponseTime().elapsedTimeMs());
       return BootStrapProgress.NOPROGRESS;
     } else if (follower.getMatchIndex() + stagingCatchupGap > committed
+        && follower.getMatchIndex() >= server.getRaftConf().getLogEntryIndex()
         && follower.getLastRpcResponseTime().compareTo(progressTime) > 0
         && follower.hasAttemptedToInstallSnapshot()) {
       return BootStrapProgress.CAUGHTUP;

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