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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8818) Allow Balancer to run faster
Date Tue, 11 Aug 2015 11:23:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14681643#comment-14681643
] 

Hudson commented on HDFS-8818:
------------------------------

FAILURE: Integrated in Hadoop-Yarn-trunk-Java8 #284 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk-Java8/284/])
HDFS-8818. Changes the global moveExecutor to per datanode executors and changes MAX_SIZE_TO_MOVE
to be configurable. (szetszwo: rev b56daff6a186599764b046248565918b894ec116)
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/MovedBlocks.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/balancer/TestBalancer.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Dispatcher.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java


> Allow Balancer to run faster
> ----------------------------
>
>                 Key: HDFS-8818
>                 URL: https://issues.apache.org/jira/browse/HDFS-8818
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: balancer & mover
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>             Fix For: 2.8.0
>
>         Attachments: h8818_20150723.patch, h8818_20150727.patch
>
>
> The original design of Balancer is intentionally to make it run slowly so that the balancing
activities won't affect the normal cluster activities and the running jobs.
> There are new use case that cluster admin may choose to balance the cluster when the
cluster load is low, or in a maintain window.  So that we should have an option to allow Balancer
to run faster.



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