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Posted to hdfs-dev@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2022/04/18 14:15:00 UTC
[jira] [Resolved] (HDFS-11041) Unable to unregister FsDatasetState MBean if DataNode is shutdown twice
[ https://issues.apache.org/jira/browse/HDFS-11041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran resolved HDFS-11041.
-----------------------------------
Fix Version/s: 3.3.3
(was: 3.4.0)
(was: 3.3.4)
Resolution: Fixed
FIxed in 3.3.3; updating fix versions as appropriate
> Unable to unregister FsDatasetState MBean if DataNode is shutdown twice
> -----------------------------------------------------------------------
>
> Key: HDFS-11041
> URL: https://issues.apache.org/jira/browse/HDFS-11041
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Trivial
> Fix For: 2.10.2, 3.3.3, 3.2.3
>
> Attachments: HDFS-11041.01.patch, HDFS-11041.02.patch, HDFS-11041.03.patch
>
>
> I saw error message like the following in some tests
> {noformat}
> 2016-10-21 04:09:03,900 [main] WARN util.MBeans (MBeans.java:unregister(114)) - Error unregistering Hadoop:service=DataNode,name=FSDatasetState-33cd714c-0b1a-471f-8efe-f431d7d874bc
> javax.management.InstanceNotFoundException: Hadoop:service=DataNode,name=FSDatasetState-33cd714c-0b1a-471f-8efe-f431d7d874bc
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBean(DefaultMBeanServerInterceptor.java:1095)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.exclusiveUnregisterMBean(DefaultMBeanServerInterceptor.java:427)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.unregisterMBean(DefaultMBeanServerInterceptor.java:415)
> at com.sun.jmx.mbeanserver.JmxMBeanServer.unregisterMBean(JmxMBeanServer.java:546)
> at org.apache.hadoop.metrics2.util.MBeans.unregister(MBeans.java:112)
> at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.shutdown(FsDatasetImpl.java:2127)
> at org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown(DataNode.java:2016)
> at org.apache.hadoop.hdfs.MiniDFSCluster.shutdownDataNodes(MiniDFSCluster.java:1985)
> at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1962)
> at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1936)
> at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1929)
> at org.apache.hadoop.hdfs.TestDatanodeReport.testDatanodeReport(TestDatanodeReport.java:144)
> {noformat}
> The test shuts down datanode, and then shutdown cluster, which shuts down the a datanode twice. Resetting the FsDatasetSpi reference in DataNode to null resolves the issue.
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