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https://issues.apache.org/jira/browse/HDFS-7687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14505463#comment-14505463
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Tsz Wo Nicholas Sze commented on HDFS-7687:
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The items looks good. Just a minor point: A Corrupt EC block group could have
>= 6 blocks but some of the blocks are corrupted.
> ... in (6,3)-Reed-Solomon, these groups have more than 9 blocks. (Are there
> these cases?)
Yes, it is possible. E.g. a datanode D0 dies and a EC block in D0 is
reconstructed in another datanode D1. Later on, D0 comes back. Then, both D0
and D1 have the same EC block and the block group could have more than 9 blocks.
> Change fsck to support EC files
> -------------------------------
>
> Key: HDFS-7687
> URL: https://issues.apache.org/jira/browse/HDFS-7687
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Takanobu Asanuma
>
> We need to change fsck so that it can detect "under replicated" and corrupted
> EC files.
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