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Posted to common-dev@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2007/03/09 20:30:09 UTC

[jira] Updated: (HADOOP-1092) NullPointerException in HeartbeatMonitor thread

     [ https://issues.apache.org/jira/browse/HADOOP-1092?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hairong Kuang updated HADOOP-1092:
----------------------------------

    Attachment: NPEReplication.patch

> NullPointerException in HeartbeatMonitor thread
> -----------------------------------------------
>
>                 Key: HADOOP-1092
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1092
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.12.0
>            Reporter: Nigel Daley
>         Assigned To: Hairong Kuang
>            Priority: Blocker
>             Fix For: 0.12.1
>
>         Attachments: NPEReplication.patch
>
>
> Running NNBench with latest trunk, I saw this NPE in the Namenode log:
>    Exception in thread "org.apache.hadoop.dfs.FSNamesystem$HeartbeatMonitor@182bcde" java.lang.NullPointerException
>         at org.apache.hadoop.dfs.FSNamesystem.countContainingNodes(FSNamesystem.java:2506)
>         at org.apache.hadoop.dfs.FSNamesystem.access$000(FSNamesystem.java:52)
>         at org.apache.hadoop.dfs.FSNamesystem$UnderReplicationBlocks.update(FSNamesystem.java:456)
>         at org.apache.hadoop.dfs.FSNamesystem.removeStoredBlock(FSNamesystem.java:2242)
>         at org.apache.hadoop.dfs.FSNamesystem.removeDatanode(FSNamesystem.java:1876)
>         at org.apache.hadoop.dfs.FSNamesystem.heartbeatCheck(FSNamesystem.java:1958)
>         at org.apache.hadoop.dfs.FSNamesystem$HeartbeatMonitor.run(FSNamesystem.java:1698)
>         at java.lang.Thread.run(Thread.java:619)

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