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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3521) Allow namenode to tolerate edit log corruption
Date Wed, 11 Jul 2012 23:07:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13412325#comment-13412325

Luke Lu commented on HDFS-3521:

Is this targeted for 1.1? Looks like it's only in branch-1 and not branch-1.1.
> 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
>             Fix For: 1.1.0
>         Attachments: h3521_20120610_b-1.patch, h3521_20120611_b-1.0.patch, h3521_20120611_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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