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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4465) Optimize datanode ReplicasMap and ReplicaInfo
Date Thu, 04 Jul 2013 06:06:21 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13699787#comment-13699787
] 

Hudson commented on HDFS-4465:
------------------------------

Integrated in Hadoop-trunk-Commit #4042 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4042/])
    HDFS-4465. Optimize datanode ReplicasMap and ReplicaInfo. Contributed by Aaron T. Myers.
(Revision 1499659)

     Result = SUCCESS
atm : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1499659
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/dev-support/findbugsExcludeFile.xml
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceScanner.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInfo.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDatanodeBlockScanner.java

                
> Optimize datanode ReplicasMap and ReplicaInfo
> ---------------------------------------------
>
>                 Key: HDFS-4465
>                 URL: https://issues.apache.org/jira/browse/HDFS-4465
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.0.5-alpha
>            Reporter: Suresh Srinivas
>            Assignee: Aaron T. Myers
>             Fix For: 2.1.0-beta
>
>         Attachments: dn-memory-improvements.patch, HDFS-4465.patch, HDFS-4465.patch,
HDFS-4465.patch
>
>
> In Hadoop a lot of optimization has been done in namenode data structures to be memory
efficient. Similar optimizations are necessary for Datanode process. With the growth in storage
per datanode and number of blocks hosted on datanode, this jira intends to optimize long lived
ReplicasMap and ReplicaInfo objects.

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