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https://issues.apache.org/jira/browse/HDFS-7281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14501082#comment-14501082
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Ming Ma commented on HDFS-7281:
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For the incompatibility issue Lohit mentioned, if some tools expect "Corrupt
blocks" line follows right after "Average block replication" line, that could
break. Do we have any definition for text output incompatibility? Thanks,
[~lohit] and [~yzhangal].
> 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.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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