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Date: Tue, 13 Oct 2009 14:57:32 -0700 (PDT)
From: "Konstantin Shvachko (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Commented: (HDFS-680) Add new access method to a copy of a
 block's replica
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    [ https://issues.apache.org/jira/browse/HDFS-680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12765267#action_12765267 ] 

Konstantin Shvachko commented on HDFS-680:
------------------------------------------

> line 83:84 has changed the formatting
   Yes, this fixes wrong alignment in this line.
> line 92:93 seems like a white-space mod
   Removed spaces in an empty line, could not resist.

> Add new access method to a copy of a block's replica
> ----------------------------------------------------
>
>                 Key: HDFS-680
>                 URL: https://issues.apache.org/jira/browse/HDFS-680
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.21.0
>            Reporter: Konstantin Boudnik
>            Assignee: Konstantin Shvachko
>             Fix For: 0.21.0
>
>         Attachments: replicaClone.patch
>
>
> Sometimes tests (and perhaps other client applications) might need an access to the state of a block's replica.
> Currently it is accessible through  {{FSDataset}} member of {{DataNode}} class. However, {{FSDataset}} is an internal matter of {{DataNode}} and shouldn't be available externally.
> This JIRA will provide new getter method which will be returning a copy of a block's replica instead of a reference to an actual replica. 

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