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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4734) Some lease recovery codes in 0.19 or trunk should also be committed in 0.18.
Date Wed, 03 Dec 2008 23:31:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653051#action_12653051
] 

Hairong Kuang commented on HADOOP-4734:
---------------------------------------

+1. This looks good.

One suggestion is that DataNode should not only validate the meta information but also the
integrity of block content before participating in a recovery process.  

> Some lease recovery codes in 0.19 or trunk should also be committed in 0.18.
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-4734
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4734
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.2
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>            Priority: Blocker
>             Fix For: 0.18.3
>
>         Attachments: 4734_20081126.patch, 4734_20081202.patch
>
>
> In HADOOP-1700, there are codes for detecting corrupted blocks.
> In HADOOP-4257, there are bug fixes for lease recovery.

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