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HDFS-11041. Unable to unregister FsDatasetState MBean if DataNode is shutdown twice. Contributed by Wei-Chiu Chuang.

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(cherry picked from commit e8cb2ae409bc1d62f23efef485d1c6f1ff21e86c)

Change-Id: I9f04082d650628bc1b8b62dacaaf472f8a578742
This commit is contained in:
Ayush Saxena 2020-06-03 12:47:15 +05:30 committed by Steve Loughran
parent c6b9fcfd6c
commit 51b3a5b22c
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GPG Key ID: D22CF846DBB162A0
2 changed files with 5 additions and 1 deletions
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1
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
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@ -2353,6 +2353,7 @@ public void shutdown() {
if (mbeanName != null) {
MBeans.unregister(mbeanName);
mbeanName = null;
}
if (asyncDiskService != null) {

5
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/SimulatedFSDataset.java
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@ -1367,7 +1367,10 @@ void registerMBean(final String storageId) {
@Override
public void shutdown() {
if (mbeanName != null) MBeans.unregister(mbeanName);
if (mbeanName != null) {
MBeans.unregister(mbeanName);
mbeanName = null;
}
}
@Override