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https://issues.apache.org/jira/browse/HDFS-6348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14533864#comment-14533864
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Rakesh R commented on HDFS-6348:
--------------------------------
Since it involves {{System.exit()}}, I couldn't manage to add a testcase.
Appreciate reviews. Thanks!
> Secondary namenode - RMI Thread prevents JVM from exiting after main()
> completes
> ---------------------------------------------------------------------------------
>
> Key: HDFS-6348
> URL: https://issues.apache.org/jira/browse/HDFS-6348
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.3.0
> Reporter: Rakesh R
> Assignee: Rakesh R
> Labels: BB2015-05-TBR
> Attachments: HDFS-6348-003.patch, HDFS-6348.patch, HDFS-6348.patch,
> secondaryNN_threaddump_after_exit.log
>
>
> Secondary Namenode is not exiting when there is RuntimeException occurred
> during startup.
> Say I configured wrong configuration, due to that validation failed and
> thrown RuntimeException as shown below. But when I check the environment
> SecondaryNamenode process is alive. When analysed, RMI Thread is still alive,
> since it is not a daemon thread JVM is nit exiting.
> I'm attaching threaddump to this JIRA for more details about the thread.
> {code}
> java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.ClassNotFoundException: Class
> com.huawei.hadoop.hdfs.server.blockmanagement.MyBlockPlacementPolicy not found
> at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1900)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockPlacementPolicy.getInstance(BlockPlacementPolicy.java:199)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.<init>(BlockManager.java:256)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:635)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:260)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:205)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:695)
> Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException:
> Class com.huawei.hadoop.hdfs.server.blockmanagement.MyBlockPlacementPolicy
> not found
> at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1868)
> at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1892)
> ... 6 more
> Caused by: java.lang.ClassNotFoundException: Class
> com.huawei.hadoop.hdfs.server.blockmanagement.MyBlockPlacementPolicy not found
> at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:1774)
> at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1866)
> ... 7 more
> 2014-05-07 14:27:04,666 INFO
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Stopping services
> started for active state
> 2014-05-07 14:27:04,666 INFO
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Stopping services
> started for standby state
> 2014-05-07 14:31:04,926 INFO
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: STARTUP_MSG:
> {code}
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