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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5920) Support rollback of rolling upgrade in NameNode and JournalNodes
Date Mon, 10 Feb 2014 18:40:19 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-5920:
----------------------------

    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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