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https://issues.apache.org/jira/browse/HDFS-4274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13528590#comment-13528590
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Ivan Mitic commented on HDFS-4274:
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Thanks Chris for reporting the problem and for the patch! I also saw that
something around DataBlockScanner causes many tests to fail.
Quick question, would it make sense to shutdown BlockPoolSliceScanners on
DataBlockScanner#shutdown? In the current patch you are assuming that it is
fine to close the verificationlogs when DataBlockScanner#run exits what might
not be always true (don't know for sure, asking based on the class
relationship). Just a thought, otherwise patch looks good.
> BlockPoolSliceScanner does not close verification log during shutdown
> ---------------------------------------------------------------------
>
> Key: HDFS-4274
> URL: https://issues.apache.org/jira/browse/HDFS-4274
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 3.0.0, trunk-win
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-4274.1.patch
>
>
> {{BlockPoolSliceScanner}} holds open a handle to a verification log. This
> file is not getting closed during process shutdown.
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