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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-863) Potential deadlock in TestOverReplicatedBlocks
Date Tue, 29 Dec 2009 17:10:29 GMT

     [ https://issues.apache.org/jira/browse/HDFS-863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-863:
-----------------------------

    Attachment: TestNodeCount.png

Same thing occurs in TestNodeCount

> Potential deadlock in TestOverReplicatedBlocks
> ----------------------------------------------
>
>                 Key: HDFS-863
>                 URL: https://issues.apache.org/jira/browse/HDFS-863
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>            Reporter: Todd Lipcon
>             Fix For: 0.22.0
>
>         Attachments: cycle.png, TestNodeCount.png
>
>
> TestOverReplicatedBlocks.testProcesOverReplicateBlock synchronizes on namesystem.heartbeats
without synchronizing on namesystem first. Other places in the code synchronize namesystem,
then heartbeats. It's probably unlikely to occur in this test case, but it's a simple fix.

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