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https://issues.apache.org/jira/browse/HDFS-5920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-5920:
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Attachment: HDFS-5920.000.patch
Preliminary patch for review. The patch still depends on some funtionality
provided by HDFS-5889.
For rollback (for rolling upgrade) in JNs, this patch simply adds a new RPC
call "doRollingRollback" (doRollback is used for rollback in HA setup). This
RollingRollback is idempotent and expect response from all the JNs.
> Support rollback of rolling upgrade in NameNode and JournalNodes
> ----------------------------------------------------------------
>
> Key: HDFS-5920
> URL: https://issues.apache.org/jira/browse/HDFS-5920
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: journal-node, namenode
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-5920.000.patch
>
>
> This jira provides rollback functionality for NameNode and JournalNode in
> rolling upgrade.
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