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Date: Fri, 18 Nov 2011 09:52:52 +0000 (UTC)
From: "Hudson (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HDFS-2562) Refactor DN configuration variables
 out of DataNode class
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    [ https://issues.apache.org/jira/browse/HDFS-2562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13152753#comment-13152753 ] 

Hudson commented on HDFS-2562:
------------------------------

Integrated in Hadoop-Common-0.23-Commit #182 (See [https://builds.apache.org/job/Hadoop-Common-0.23-Commit/182/])
    HDFS-2562. Refactor DN configuration variables out of DataNode class. Contributed by Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1203542
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockReceiver.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DNConf.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiver.java
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestInterDatanodeProtocol.java

                
> Refactor DN configuration variables out of DataNode class
> ---------------------------------------------------------
>
>                 Key: HDFS-2562
>                 URL: https://issues.apache.org/jira/browse/HDFS-2562
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node
>    Affects Versions: 0.24.0, 0.23.1
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: 0.24.0, 0.23.1
>
>         Attachments: hdfs-2562.txt
>
>
> Right now there are many member variables in DataNode.java which are just read from configuration when the DN is started. Similar to what we did with DFSClient, we should refactor them into a new DNConf class which can be passed around - the motivation is to remove the many references we have throughout the code that read package-protected members of DataNode and reduce the number of members in DataNode itself.

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