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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-619) Support replica recovery initialization in datanode
Date Thu, 17 Sep 2009 01:26:57 GMT

    [ https://issues.apache.org/jira/browse/HDFS-619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12756322#action_12756322
] 

Tsz Wo (Nicholas), SZE commented on HDFS-619:
---------------------------------------------

{noformat}
     [exec] +1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 3 new or modified tests.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.
{noformat}
Also passed all unit tests locally.

> Support replica recovery initialization in datanode
> ---------------------------------------------------
>
>                 Key: HDFS-619
>                 URL: https://issues.apache.org/jira/browse/HDFS-619
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: data-node
>    Affects Versions: Append Branch
>            Reporter: Tsz Wo (Nicholas), SZE
>             Fix For: Append Branch
>
>         Attachments: h619_20090914.patch, h619_20090914b.patch, h619_20090915.patch,
h619_20090915b.patch, h619_20090916.patch, h619_20090916b.patch
>
>
> In the [append design|https://issues.apache.org/jira/secure/attachment/12415768/appendDesign2.pdf],
there is a block recovery algorithm presented in Section 6.5.  We are going to implement step
4a, datanode replica recovery initialization, in this issue.

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