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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3521) Allow namenode to tolerate edit log corruption
Date Mon, 11 Jun 2012 07:49:43 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HDFS-3521:
-----------------------------------------

    Attachment: h3521_20120610_b-1.patch

h3521_20120610_b-1.patch: 1st patch.
                
> Allow namenode to tolerate edit log corruption
> ----------------------------------------------
>
>                 Key: HDFS-3521
>                 URL: https://issues.apache.org/jira/browse/HDFS-3521
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h3521_20120610_b-1.patch
>
>
> HDFS-3479 adds checking for edit log corruption. It uses a fixed UNCHECKED_REGION_LENGTH
(=PREALLOCATION_LENGTH) so that the bytes at the end within the length is not checked.  Instead
of not checking the bytes, we should check everything and allow toleration.

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