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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3335) check for edit log corruption at the end of the log
Date Wed, 16 May 2012 05:54:24 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-3335:
------------------------------

    Fix Version/s:     (was: 2.0.0)
                   2.0.1
    
> check for edit log corruption at the end of the log
> ---------------------------------------------------
>
>                 Key: HDFS-3335
>                 URL: https://issues.apache.org/jira/browse/HDFS-3335
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.23.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>             Fix For: 2.0.1
>
>         Attachments: HDFS-3335-b1.001.patch, HDFS-3335-b1.002.patch, HDFS-3335-b1.003.patch,
HDFS-3335-b1.004.patch, HDFS-3335.001.patch, HDFS-3335.002.patch, HDFS-3335.003.patch, HDFS-3335.004.patch,
HDFS-3335.005.patch, HDFS-3335.006.patch, HDFS-3335.007.patch, HDFS-3335.008.patch, HDFS-3335.009.patch,
HDFS-3335.010.patch, HDFS-3335.011.patch
>
>
> Even after encountering an OP_INVALID, we should check the end of the edit log to make
sure that it contains no more edits.
> This will catch things like rare race conditions or log corruptions that would otherwise
remain undetected.  They will got from being silent data loss scenarios to being cases that
we can detect and fix.
> Using recovery mode, we can choose to ignore the end of the log if necessary.

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