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https://issues.apache.org/jira/browse/HDFS-6041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao resolved HDFS-6041.
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Resolution: Fixed
Thanks Nicholas! I've committed this.
> Downgrade/Finalize should rename the rollback image instead of purging it
> -------------------------------------------------------------------------
>
> Key: HDFS-6041
> URL: https://issues.apache.org/jira/browse/HDFS-6041
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-6041.000.patch, HDFS-6041.001.patch
>
>
> After we do rollingupgrade downgrade/finalize, instead of purging the
> rollback image, we'd better rename it back to normal image, since the
> rollback image can be the most recent checkpoint.
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