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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6601) Issues in finalizing rolling upgrade when there is a layout version change
Date Wed, 25 Jun 2014 15:13:25 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kihwal Lee updated HDFS-6601:
-----------------------------

    Priority: Blocker  (was: Major)

> Issues in finalizing rolling upgrade when there is a layout version change
> --------------------------------------------------------------------------
>
>                 Key: HDFS-6601
>                 URL: https://issues.apache.org/jira/browse/HDFS-6601
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.5.0
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Blocker
>         Attachments: HDFS-6601.patch
>
>
> After HDFS-6545, we have noticed a couple of issues.
> - The storage dir's VERSION file is not properly updated. This becomes a problem when
there is a layout version change.  We can have the finalization do {{storage.writeAll()}}
> - {{OP_ROLLING_UPGRADE_FINALIZE}} cannot be replayed, once the corresponding {{OP_ROLLING_UPGRADE_START}}
is consumed and a new fsimage is created (e.g. rollback image). On restart, NN terminates
complaining it can't finalize something that it didn't start. We can make NN ignore {{OP_ROLLING_UPGRADE_FINALIZE}}
if no rolling upgrade is in progress.



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