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https://issues.apache.org/jira/browse/HDFS-6004?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal resolved HDFS-6004.
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Resolution: Fixed
Fix Version/s: HDFS-5535 (Rolling upgrades)
Hadoop Flags: Reviewed
+1 for the patch. I committed it to the feature branch as r1571463. Thanks
Nicholas!
> Change DFSAdmin for rolling upgrade commands
> --------------------------------------------
>
> Key: HDFS-6004
> URL: https://issues.apache.org/jira/browse/HDFS-6004
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: HDFS-5535 (Rolling upgrades)
>
> Attachments: h6004_20140224.patch, h6004_20140224b.patch,
> h6004_20140224c.patch
>
>
> When rolling upgrade is initiated, a image is created for rollback. We
> propose the following changes for the DFSAdmin for rolling upgrade commands:
> - change "dfsadmin -rollingUpgrade start" to "dfsadmin -rollingUpgrade
> prepare";
> - add information for the rollback image to "dfsadmin -rollingUpgrade query".
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