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https://issues.apache.org/jira/browse/HDFS-7648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14315505#comment-14315505
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Rakesh R commented on HDFS-7648:
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[~szetszwo]Nicholas
bq.I am fine even if we do it in two JIRAs.
+1 for this approach.
bq.except I do not think we should be creating a giant list of all the blocks
that are mismatched
Thats good point. How about having a list of fixed size, say 100. While
verification if {{mismatchFiles}} list reaches this limit, will print all the
blocks and make it empty. ok?. I'd like to avoid too many logs which may noise.
> 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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