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https://issues.apache.org/jira/browse/HDFS-7648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14314176#comment-14314176
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Rakesh R commented on HDFS-7648:
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Hi [~szetszwo], [~cmccabe], Thanks for the comments. It would be great if we
can reach to an agreement about the way to verify and handle the mismatched
blocks.
As an initial attempt, I'm attaching a patch where I tried to compare the
directory paths and logging WARN message. Later based on the discussion in the
jira will do the necessary changes. Please review the approach when you get
some time.
> 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.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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