From 297170e09224103c145b2cc1e45d5d8b8132cc3e Mon Sep 17 00:00:00 2001
From: teamconfx <team.fuzzing@gmail.com>
Date: Wed, 27 Mar 2024 01:49:23 +0800
Subject: [PATCH] check executor not null before stopping in FifoRpcScheduler

---
 .../java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java
index b51154fc24eb..842366d625f2 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java
@@ -68,7 +68,9 @@ public void start() {
 
   @Override
   public void stop() {
-    this.executor.shutdown();
+    if (this.executor != null) {
+      this.executor.shutdown();
+    }
   }
 
   private static class FifoCallRunner implements Runnable {