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https://issues.apache.org/jira/browse/HDFS-7648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14332305#comment-14332305
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Rakesh R commented on HDFS-7648:
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There is a long discussion thread about automatically fixing the unmatched
blocks and I feel it will be good to continue the discussion in this jira
itself.Will try to reach a common agreement, then will implement the logic
accordingly. Thanks [~szetszwo] and [~cmccabe] for the inputs so far. Since its
decided to log a warn message of unmatched block and I've raised a separate
sub-task to fix this part alone. Kindly review HDFS-7819.
> Verify the datanode directory layout
> ------------------------------------
>
> Key: HDFS-7648
> URL: https://issues.apache.org/jira/browse/HDFS-7648
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Rakesh R
> Attachments: HDFS-7648-3.patch, HDFS-7648-4.patch, HDFS-7648-5.patch,
> HDFS-7648.patch, HDFS-7648.patch
>
>
> HDFS-6482 changed datanode layout to use block ID to determine the directory
> to store the block. We should have some mechanism to verify it. Either
> DirectoryScanner or block report generation could do the check.
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