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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5015) Separate block/replica management code from FSNamesystem
Date Sun, 03 May 2009 00:53:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12705359#action_12705359
] 

dhruba borthakur commented on HADOOP-5015:
------------------------------------------

This patch is not related to HADOOP-3799. This patch attempts to separate out the block manager
code from the namespace manager code whereas HADOOP-3799 makes the replica-placement pluggable.

> Separate block/replica management code from FSNamesystem
> --------------------------------------------------------
>
>                 Key: HADOOP-5015
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5015
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Hairong Kuang
>            Assignee: Suresh Srinivas
>             Fix For: 0.21.0
>
>         Attachments: blkmanager.patch
>
>
> Currently FSNamesystem contains a big amount of code that manages blocks and replicas.
The code scatters in FSNamesystem and it is hard to read and maintain. It would be nice to
move the code to a separate class called, for example, BlockManager. 

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