From cd467d9a77891e8f62b92b046b691e26d42b58db Mon Sep 17 00:00:00 2001
From: szywilliam <szywilliam@163.com>
Date: Wed, 29 May 2024 20:22:18 +0800
Subject: [PATCH] fix nullpointer on getState()

---
 .../main/java/org/apache/ratis/server/impl/RaftServerImpl.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ratis-server/src/main/java/org/apache/ratis/server/impl/RaftServerImpl.java b/ratis-server/src/main/java/org/apache/ratis/server/impl/RaftServerImpl.java
index 8a85488135..6472692504 100644
--- a/ratis-server/src/main/java/org/apache/ratis/server/impl/RaftServerImpl.java
+++ b/ratis-server/src/main/java/org/apache/ratis/server/impl/RaftServerImpl.java
@@ -1853,7 +1853,7 @@ CompletableFuture<Message> applyLogToStateMachine(ReferenceCountedObject<LogEntr
   void notifyTruncatedLogEntry(LogEntryProto logEntry) {
     if (logEntry.hasStateMachineLogEntry()) {
       getTransactionManager().remove(TermIndex.valueOf(logEntry));
-      getState().truncate(logEntry.getIndex());
+      Optional.ofNullable(getState()).ifPresent(s -> s.truncate(logEntry.getIndex()));
 
       final ClientInvocationId invocationId = ClientInvocationId.valueOf(logEntry.getStateMachineLogEntry());
       final CacheEntry cacheEntry = getRetryCache().getIfPresent(invocationId);