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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2491) TestBalancer can fail when datanode utilization and avgUtilization is exactly same.
Date Sun, 23 Oct 2011 13:18:32 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13133635#comment-13133635
] 

Hudson commented on HDFS-2491:
------------------------------

Integrated in Hadoop-Mapreduce-trunk #869 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/869/])
    HDFS-2491. TestBalancer can fail when datanode utilization and avgUtilization is exactly
same. Contributed by Uma Maheswara Rao G.

shv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1187837
Files : 
* /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

                
> TestBalancer can fail when datanode utilization and avgUtilization is exactly same.
> -----------------------------------------------------------------------------------
>
>                 Key: HDFS-2491
>                 URL: https://issues.apache.org/jira/browse/HDFS-2491
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.22.0, 0.23.0, 0.24.0
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>             Fix For: 0.22.0, 0.24.0
>
>         Attachments: HDFS-2492-22Branch.patch, HDFS-2492.patch
>
>
> Stack Trace:
> junit.framework.AssertionFailedError: 127.0.0.1:60986is not an underUtilized node: utilization=22.0
avgUtilization=22.0 threshold=10.0
> at org.apache.hadoop.hdfs.server.balancer.Balancer.initNodes(Balancer.java:1014)
> at org.apache.hadoop.hdfs.server.balancer.Balancer.initNodes(Balancer.java:953)
> at org.apache.hadoop.hdfs.server.balancer.Balancer.run(Balancer.java:1502)
> at org.apache.hadoop.hdfs.server.balancer.TestBalancer.runBalancer(TestBalancer.java:247)
> at org.apache.hadoop.hdfs.server.balancer.TestBalancer.test(TestBalancer.java:234)
> at org.apache.hadoop.hdfs.server.balancer.TestBalancer.twoNodeTest(TestBalancer.java:312)
> at org.apache.hadoop.hdfs.server.balancer.TestBalancer.__CLR2_4_39j3j5b10ou(TestBalancer.java:328)
> at org.apache.hadoop.hdfs.server.balancer.TestBalancer.testBalancer0(TestBalancer.java:324)

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