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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 Wed, 26 Oct 2011 18:29:32 GMT

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

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

            Assignee: Todd Lipcon
    Target Version/s: HA branch (HDFS-1623), 0.24.0  (was: 0.24.0, HA branch (HDFS-1623))
              Status: Patch Available  (was: Open)
    
> 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
>         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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