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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2797) HA: Add a test for the standby becoming active after a partial transaction is logged
Date Sun, 03 Jun 2012 18:39:24 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13288231#comment-13288231
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Colin Patrick McCabe commented on HDFS-2797:
--------------------------------------------

Thanks, atm.  On closer examination, there's already IOUtils#skipFully, which does exactly
what I want.
                
> HA: Add a test for the standby becoming active after a partial transaction is logged
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-2797
>                 URL: https://issues.apache.org/jira/browse/HDFS-2797
>             Project: Hadoop HDFS
>          Issue Type: Test
>          Components: ha, name-node
>    Affects Versions: 0.24.0
>            Reporter: Aaron T. Myers
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-2797.001.patch, HDFS-2797.002.patch
>
>
> The existing failover tests only cover the case of graceful shutdown. We should make
sure the standby NN can become active even when the final transaction in an edit log is only
partially written to disk.

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