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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-619) Support replica recovery initialization in datanode
Date Wed, 16 Sep 2009 20:25:57 GMT

     [ https://issues.apache.org/jira/browse/HDFS-619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HDFS-619:
----------------------------------------

    Attachment: h619_20090916.patch

> 2. FSDataSet#checkReplica() is better to be put in FSDataSetInterface because BlockSender
calls this method too.
We cannot put FSDataSet#checkReplica() in FSDataSetInterface because it is a Java interface.
 Because of #1, FSDataSet#checkReplica()  is not very useful.  I will remove it.

h619_20090916.patch:  changed for #1, #3 and #4.

> 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
>
>
> 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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