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https://issues.apache.org/jira/browse/HDFS-5945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13900335#comment-13900335
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Vinayakumar B commented on HDFS-5945:
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Hi Nicholas,
Since HDFS-5698 is already merged to trunk, why not merge those changes first
and then make changes related to this jira using protobuf itself?
> Add rolling upgrade information to fsimage
> ------------------------------------------
>
> Key: HDFS-5945
> URL: https://issues.apache.org/jira/browse/HDFS-5945
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h5945_20140213.patch
>
>
> When rolling upgrade is in progress, the standby namenode may create
> checkpoint. The rolling upgrade information should be added to fsimage in
> order to support namenode restart and continue rolling upgrade.
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