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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7281) Missing block is marked as corrupted block
Date Tue, 21 Apr 2015 05:25:59 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ming Ma updated HDFS-7281:
--------------------------
    Attachment: HDFS-7281-4.patch

Yongjun, that makes sense. Here is the updated patch.

> 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
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>              Labels: supportability
>         Attachments: HDFS-7281-2.patch, HDFS-7281-3.patch, HDFS-7281-4.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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