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https://issues.apache.org/jira/browse/HDFS-7648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15203741#comment-15203741
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Rakesh R commented on HDFS-7648:
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Thanks [~dwatzke], [~szetszwo]
bq. Agree that it should print out the actual and the expected directories.
I think we can utilize this parent jira to continue the discussion of
corrective actions. I've raised separate sub-task HDFS-10186 to improve logging
part. Please take a look at it.
bq. Please also create a helper method but not duplicating the code.
I failed to understand it, could you please provide few more details.
> Verify that HDFS blocks are in the correct datanode directories
> ---------------------------------------------------------------
>
> 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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