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From "Todd Lipcon (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2507) HA: Allow saveNamespace operations to be canceled
Date Thu, 27 Oct 2011 22:12:32 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-2507:
------------------------------

          Resolution: Fixed
       Fix Version/s: 0.24.0
                      HA branch (HDFS-1623)
    Target Version/s: HA branch (HDFS-1623), 0.24.0  (was: 0.24.0, HA branch (HDFS-1623))
        Hadoop Flags: Reviewed
              Status: Resolved  (was: Patch Available)

Committed to HA and 0.24. I wasn't able to commit to 0.23 since HDFS-2223 is missing, there.
We may have to backport both 2223 and this JIRA when we merge HA.
                
> HA: Allow saveNamespace operations to be canceled
> -------------------------------------------------
>
>                 Key: HDFS-2507
>                 URL: https://issues.apache.org/jira/browse/HDFS-2507
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: HA branch (HDFS-1623), 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: HA branch (HDFS-1623), 0.24.0
>
>         Attachments: hdfs-2507.txt
>
>
> For HDFS-2291 (checkpointing in HA setup) we need to allow the StandbyNode to handle
a failover while it may be in the middle of saving a checkpoint. This implies that checkpoints
need to be abortable.
> This JIRA is to implement this functionality. Even though this is only needed for HA,
I think we should do the infrastructure in trunk to simplify future merges.

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