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https://issues.apache.org/jira/browse/HADOOP-5009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12665976#action_12665976
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Hairong Kuang commented on HADOOP-5009:
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[exec] -1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] -1 tests included. The patch doesn't appear to include any new
or modified tests.
[exec] Please justify why no tests are needed for
this patch.
[exec]
[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
[exec]
[exec] +1 Eclipse classpath. The patch retains Eclipse classpath
integrity.
ant test-core fails only TestMapReduceLocal which is a known issue.
> 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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