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https://issues.apache.org/jira/browse/HADOOP-4957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12660146#action_12660146
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Nigel Daley commented on HADOOP-4957:
-------------------------------------
A reminder that our Code Review Guidelines
(http://wiki.apache.org/hadoop/CodeReviewChecklist) include:
- look for accidental propagation of exceptions
- look for unanticipated runtime exceptions
If these guidelines were more consistently followed, they types of problems
could be averted.
> Lease monitor should not fail on a live name-node.
> --------------------------------------------------
>
> Key: HADOOP-4957
> URL: https://issues.apache.org/jira/browse/HADOOP-4957
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.18.3
> Reporter: Konstantin Shvachko
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.20.0
>
>
> If a runtime exception is thrown inside the lease monitor, as it happened in
> HADOOP-4951, the monitor will die although the name-node will continue to
> run. The problem is that abandoned files will not be garbage collected.
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