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zhangduo pushed a commit to branch branch-2.4
in repository https://gitbox.apache.org/repos/asf/hbase.git


The following commit(s) were added to refs/heads/branch-2.4 by this push:
     new 2790b60c931 HBASE-28598 Fixes NPE for writer object access in 
AsyncFSWAL#closeWriter (#5907)
2790b60c931 is described below

commit 2790b60c931b73605fadd4697ee8ec02b5d00c09
Author: Vineet Kumar Maheshwari <[email protected]>
AuthorDate: Fri May 17 20:04:28 2024 +0530

    HBASE-28598 Fixes NPE for writer object access in AsyncFSWAL#closeWriter 
(#5907)
    
    Signed-off-by: Duo Zhang <[email protected]>
    (cherry picked from commit 17ae116db1ee4d85fda8721b468dd296b3178cf1)
---
 .../java/org/apache/hadoop/hbase/regionserver/wal/AsyncFSWAL.java   | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git 
a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AsyncFSWAL.java
 
b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AsyncFSWAL.java
index ade8f75a74c..5be8a640b33 100644
--- 
a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AsyncFSWAL.java
+++ 
b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AsyncFSWAL.java
@@ -797,8 +797,10 @@ public class AsyncFSWAL extends AbstractFSWAL<AsyncWriter> 
{
   @Override
   protected void doShutdown() throws IOException {
     waitForSafePoint();
-    closeWriter(this.writer, getOldPath());
-    this.writer = null;
+    if (this.writer != null) {
+      closeWriter(this.writer, getOldPath());
+      this.writer = null;
+    }
     closeExecutor.shutdown();
     try {
       if (!closeExecutor.awaitTermination(waitOnShutdownInSeconds, 
TimeUnit.SECONDS)) {

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