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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2240) Possible deadlock between LeaseRenewer and its factory
Date Fri, 12 Aug 2011 04:42:27 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HDFS-2240:
-----------------------------------------

    Attachment: h2240_20110811.patch

Todd, thanks for checking it.  You are right that it is not a bug since the synchronization
is in a constructor.  I agree that it is good to fix the warning though.  How about using
unsync-call in constructor?  It requires very little code change.

h2240_20110811.patch: unsyncSetGraceSleepPeriod(..)

> Possible deadlock between LeaseRenewer and its factory
> ------------------------------------------------------
>
>                 Key: HDFS-2240
>                 URL: https://issues.apache.org/jira/browse/HDFS-2240
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Tsz Wo (Nicholas), SZE
>            Priority: Critical
>             Fix For: 0.23.0
>
>         Attachments: h2240_20110808.patch, h2240_20110811.patch, hdfs-2240-2.txt, lease-renewer-cycle.png
>
>
> Lock cycle detected by jcarder

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