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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6441) Add ability to exclude/include specific datanodes while balancing
Date Thu, 31 Jul 2014 14:56:42 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14080965#comment-14080965
] 

Hudson commented on HDFS-6441:
------------------------------

SUCCESS: Integrated in Hadoop-Mapreduce-trunk #1848 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1848/])
HDFS-6441. Add ability to exclude/include specific datanodes while balancing. (Contributed
by Benoy Antony and Yu Li) (arp: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1614812)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/StringUtils.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerWithHANameNodes.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerWithMultipleNameNodes.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancerWithNodeGroup.java


> Add ability to exclude/include specific datanodes while balancing
> -----------------------------------------------------------------
>
>                 Key: HDFS-6441
>                 URL: https://issues.apache.org/jira/browse/HDFS-6441
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: balancer
>    Affects Versions: 2.4.0
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>             Fix For: 3.0.0, 2.6.0
>
>         Attachments: HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch,
HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch,
HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch, HDFS-6441.patch
>
>
> In some use cases, it is desirable to ignore a few data nodes  while balancing. The administrator
should be able to specify a list of data nodes in a file similar to the hosts file and the
balancer should ignore these data nodes while balancing so that no blocks are added/removed
on these nodes.
> Similarly it will be beneficial to specify that only a particular list of datanodes should
be considered for balancing.



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