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https://issues.apache.org/jira/browse/HDFS-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE resolved HDFS-5848.
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Resolution: Fixed
Fix Version/s: HDFS-5535 (Rolling upgrades)
Hadoop Flags: Reviewed
Thanks Vinay and Jing for reviewing the patch.
I have committed this.
> Add rolling upgrade infomation to heartbeat response
> ----------------------------------------------------
>
> Key: HDFS-5848
> URL: https://issues.apache.org/jira/browse/HDFS-5848
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: HDFS-5535 (Rolling upgrades)
>
> Attachments: h5848_20130130.patch, h5848_20130130b.patch,
> h5848_20140131.patch
>
>
> When rolling upgrade is in progress, NN should inform datanodes via heartbeat
> responses so that datanode should create hardlinks when deleting blocks. We
> only change heartbeat response here. The datanode change will be done in a
> separated JIRA.
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