You are viewing a plain text version of this content. The canonical link for it is here.
Posted to hdfs-issues@hadoop.apache.org by "Arpit Agarwal (JIRA)" <ji...@apache.org> on 2014/03/12 23:28:45 UTC
[jira] [Updated] (HDFS-6098) ConcurrentModificationException
exception during DataNode shutdown
[ https://issues.apache.org/jira/browse/HDFS-6098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arpit Agarwal updated HDFS-6098:
--------------------------------
Attachment: HDFS-6098.01.patch
Trivial patch to make {{bpSlices}} a {{ConcurrentHashMap}}. I think it is sufficient here.
> ConcurrentModificationException exception during DataNode shutdown
> ------------------------------------------------------------------
>
> Key: HDFS-6098
> URL: https://issues.apache.org/jira/browse/HDFS-6098
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.4.0
> Reporter: Arpit Agarwal
> Attachments: HDFS-6098.01.patch
>
>
> Exception hit during DN shutdown while running {{TestWebHdfsWithMultipleNameNodes}}:
> {code}
> java.util.ConcurrentModificationException: null
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894)
> at java.util.HashMap$EntryIterator.next(HashMap.java:934)
> at java.util.HashMap$EntryIterator.next(HashMap.java:932)
> at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.shutdown(FsVolumeImpl.java:251)
> at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList.shutdown(FsVolumeList.java:249)
> at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.shutdown(FsDatasetImpl.java:1376)
> at org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown(DataNode.java:1301)
> at org.apache.hadoop.hdfs.MiniDFSCluster.shutdownDataNodes(MiniDFSCluster.java:1523)
> at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1498)
> at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1482)
> at org.apache.hadoop.hdfs.web.TestWebHdfsWithMultipleNameNodes.shutdownCluster(TestWebHdfsWithMultipleNameNodes.java:99)
> {code}
--
This message was sent by Atlassian JIRA
(v6.2#6252)