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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10625) VolumeScanner to report why a block is found bad
Date Mon, 29 Aug 2016 21:23:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15447087#comment-15447087
] 

Yongjun Zhang commented on HDFS-10625:
--------------------------------------

Committed to trunk, branch-2, branch-2.8

Thanks [~shahrs87] and [~linyiqun] for the contribution, and [~vinayrpet] for the review.


>  VolumeScanner to report why a block is found bad
> -------------------------------------------------
>
>                 Key: HDFS-10625
>                 URL: https://issues.apache.org/jira/browse/HDFS-10625
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, hdfs
>            Reporter: Yongjun Zhang
>            Assignee: Rushabh S Shah
>              Labels: supportability
>         Attachments: HDFS-10625-1.patch, HDFS-10625.003.patch, HDFS-10625.004.patch,
HDFS-10625.005.patch, HDFS-10625.patch
>
>
> VolumeScanner may report:
> {code}
> WARN org.apache.hadoop.hdfs.server.datanode.VolumeScanner: Reporting bad blk_1170125248_96458336
on /d/dfs/dn
> {code}
> It would be helpful to report the reason why the block is bad, especially when the block
is corrupt, where is the first corrupted chunk in the block.



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