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

(cherry picked from commit e8cb2ae409)
This commit is contained in:
Ayush Saxena 2020-06-03 12:47:15 +05:30 committed by Wei-Chiu Chuang
parent d763c99707
commit fa30224e95
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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 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
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 @@ public class SimulatedFSDataset implements FsDatasetSpi<FsVolumeSpi> {
@Override
public void shutdown() {
if (mbeanName != null) MBeans.unregister(mbeanName);
if (mbeanName != null) {
MBeans.unregister(mbeanName);
mbeanName = null;
}
}
@Override