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https://issues.apache.org/jira/browse/HDFS-7281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14523402#comment-14523402
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Ming Ma commented on HDFS-7281:
-------------------------------

Thanks [~yzhangal] and [~lohit], [~aw], [~cnauroth], [~andrew.wang].

> Missing block is marked as corrupted block
> ------------------------------------------
>
>                 Key: HDFS-7281
>                 URL: https://issues.apache.org/jira/browse/HDFS-7281
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: HDFS
>    Affects Versions: 3.0.0
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>              Labels: supportability
>             Fix For: 3.0.0
>
>         Attachments: HDFS-7281-2.patch, HDFS-7281-3.patch, HDFS-7281-4.patch, 
> HDFS-7281-5.patch, HDFS-7281-6.patch, HDFS-7281.patch
>
>
> In the situation where the block lost all its replicas, fsck shows the block 
> is missing as well as corrupted. Perhaps it is better not to mark the block 
> corrupted in this case. The reason it is marked as corrupted is 
> numCorruptNodes == numNodes == 0 in the following code.
> {noformat}
> BlockManager
>     final boolean isCorrupt = numCorruptNodes == numNodes;
> {noformat}
> Would like to clarify if it is the intent to mark missing block as corrupted 
> or it is just a bug.



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