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https://issues.apache.org/jira/browse/HADOOP-7013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12932553#action_12932553
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Hairong Kuang commented on HADOOP-7013:
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The patch looks good except for an incompatible change.
BlockLocation is not used in any wire-protocol, but for some reason it is
Writable. So if by any chance somebody serialize this object in a file etc,
then this patch makes it incompatible.
I would suggest that this patch does not change the serialization format. Since
Hadoop does not use it over the wire, it won't do any harm.
> Add boolean field isCorrupt to BlockLocation
> --------------------------------------------
>
> Key: HADOOP-7013
> URL: https://issues.apache.org/jira/browse/HADOOP-7013
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Patrick Kling
> Attachments: HADOOP-7013.patch
>
>
> This is needed to allow DFSClient.getBlockLocations to notify the calling
> application when returning a BlockLocation that corresponds to a corrupt
> block. Currently, this happens when there are no uncorrupted replicas of a
> requested block.
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