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Mike Drob commented on HDFS-11041: ---------------------------------- [~weichiu] - any chance of a backport to 3.3.x? > 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: 3.4.0 > > 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. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org