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From "Ken Goodhope (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-863) Potential deadlock in TestOverReplicatedBlocks
Date Tue, 25 Jan 2011 18:48:44 GMT

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

Ken Goodhope updated HDFS-863:
------------------------------

    Attachment:     (was: HDFS-863.patch)

> 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
>            Assignee: Ken Goodhope
>             Fix For: 0.23.0
>
>         Attachments: cycle.png, HDFS-863.patch, 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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