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https://issues.apache.org/jira/browse/HDFS-5945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE resolved HDFS-5945.
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Resolution: Fixed
Fix Version/s: HDFS-5535 (Rolling upgrades)
> 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
> Fix For: HDFS-5535 (Rolling upgrades)
>
> Attachments: HDFS-5945.protobuf.patch, h5945_20140213.patch,
> h5945_20140214.patch, h5945_20140216.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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