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https://issues.apache.org/jira/browse/HDFS-8404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee updated HDFS-8404:
-----------------------------
Resolution: Fixed
Fix Version/s: 2.7.1
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Committed to trunk, branch-2 and branch-2.7. Thanks for fixing this, Nathan.
> Pending block replication can get stuck using older genstamp
> ------------------------------------------------------------
>
> Key: HDFS-8404
> URL: https://issues.apache.org/jira/browse/HDFS-8404
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.6.0, 2.7.0
> Reporter: Nathan Roberts
> Assignee: Nathan Roberts
> Fix For: 2.7.1
>
> Attachments: HDFS-8404-v0.patch, HDFS-8404-v1.patch
>
>
> If an under-replicated block gets into the pending-replication list, but
> later the genstamp of that block ends up being newer than the one originally
> submitted for replication, the block will fail replication until the NN is
> restarted.
> It will be safer if processPendingReplications() gets up-to-date blockinfo
> before resubmitting replication work.
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