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https://issues.apache.org/jira/browse/HDFS-11038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610461#comment-15610461
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Hudson commented on HDFS-11038:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10693 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/10693/])
HDFS-11038. DiskBalancer: support running multiple commands in single
(aengineer: rev 9f32364d283dec47dd07490e253d477a0d14ac71)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/diskbalancer/command/Command.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/diskbalancer/command/TestDiskBalancerCommand.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DiskBalancerCLI.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/diskbalancer/command/PlanCommand.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/diskbalancer/DiskBalancerTestUtil.java
> DiskBalancer: support running multiple commands in single test
> --------------------------------------------------------------
>
> Key: HDFS-11038
> URL: https://issues.apache.org/jira/browse/HDFS-11038
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
> Attachments: HDFS-11038.000.patch, HDFS-11038.001.patch
>
>
> Disk balancer follows/reuses one rule designed by HDFS balancer, that is,
> only one instance is allowed to run at the same time. This is correct in
> production system to avoid any inconsistencies, but it's not ideal to write
> and run unit tests. For example, it should be allowed run plan, execute, scan
> commands under one setup of disk balancer. One instance rule will throw
> exception by complaining 'Another instance is running'. In such a case,
> there's no way to do a full life cycle tests which involves a sequence of
> commands.
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