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https://issues.apache.org/jira/browse/HADOOP-4951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12659727#action_12659727
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Tsz Wo (Nicholas), SZE commented on HADOOP-4951:
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Tested locally. Only TestMapReduceLocal failed but it is not related to this.
See HADOOP-4907.
> Lease monitor does not own the LeaseManager lock in changing leases.
> --------------------------------------------------------------------
>
> Key: HADOOP-4951
> URL: https://issues.apache.org/jira/browse/HADOOP-4951
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.18.2
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Priority: Blocker
> Attachments: 4951_20081229.patch, 4951_20081229b.patch,
> 4951_20081229c.patch, 4951_20081229c_0.18.patch, 4951_20081229c_0.19.patch
>
>
> In Monitor.checkLeases(), the monitor thread does not own the LeaseManager
> lock but it may modify the leases.
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