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From "David Watzke (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7648) Verify that HDFS blocks are in the correct datanode directories
Date Fri, 18 Mar 2016 18:11:33 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15201897#comment-15201897
] 

David Watzke commented on HDFS-7648:
------------------------------------

Would it be possible to extend the WARN message to also contain full path of both the wrong
and the correct block directory? If it won't get fixed automatically then why not help admins
out that way?

> 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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