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https://issues.apache.org/jira/browse/HADOOP-4997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662163#action_12662163
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Hairong Kuang commented on HADOOP-4997:
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Dhruba, we should also remove the unit tests that test the tmp directory does
not get removed after restarting the cluster.
> workaround for tmp file handling on DataNodes in 0.18 (HADOOP-4663)
> -------------------------------------------------------------------
>
> Key: HADOOP-4997
> URL: https://issues.apache.org/jira/browse/HADOOP-4997
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.18.0
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Priority: Blocker
> Fix For: 0.18.3
>
> Attachments: deleteTmp-0.18.patch
>
>
> This is a temporary work around issues discussed in HADOOP-4663.
> The proposal is to remove all the files under tmp directory, thus bringing
> the behavior back to 0.17. The main cost is that sync() will not be
> supported. This is incompatible with 0.18.x, but not with 0.17 because of
> this reason.
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