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https://issues.apache.org/jira/browse/HADOOP-5009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HADOOP-5009:
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Hadoop Flags: [Reviewed]
+1 the new patch looks good.
> DataNode#shutdown sometimes leaves data block scanner verification log
> unclosed
> -------------------------------------------------------------------------------
>
> Key: HADOOP-5009
> URL: https://issues.apache.org/jira/browse/HADOOP-5009
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.17.0
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Fix For: 0.19.1
>
> Attachments: blockScannerFd.patch, blockScannerFd1.patch
>
>
> When datanode gets shutdown by calling DataNode#shutdown, it occasionally
> leaves the data block scanner verification log unclosed. There are two
> possible causes:
> 1. DataNode does not wait until block scanner thread to exit.
> 2. DataBlockScanner does not guarantee that the verification log is closed if
> the scanner is interrupted.
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