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Date: Tue, 6 Mar 2012 15:13:59 +0000 (UTC)
From: "Jason Lowe (Updated) (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Updated] (MAPREDUCE-3976) TestRMContainerAllocator failing
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     [ https://issues.apache.org/jira/browse/MAPREDUCE-3976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated MAPREDUCE-3976:
----------------------------------

    Attachment: MAPREDUCE-3976.patch

Patch to call JvmMetrics.initSingleton() instead of JvmMetrics.create() to prevent multiple instantiations.  No additional unit tests since this is fixing existing tests.
                
> TestRMContainerAllocator failing
> --------------------------------
>
>                 Key: MAPREDUCE-3976
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3976
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.2
>            Reporter: Bikas Saha
>            Assignee: Jason Lowe
>         Attachments: MAPREDUCE-3976.patch
>
>
> The following stack trace is being generated
> ========
> org.apache.hadoop.metrics2.MetricsException: Metrics source JvmMetrics already exists!
> 	at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newSourceName(DefaultMetricsSystem.java:126)
> 	at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.sourceName(DefaultMetricsSystem.java:107)
> 	at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.register(MetricsSystemImpl.java:216)
> 	at org.apache.hadoop.metrics2.source.JvmMetrics.create(JvmMetrics.java:80)
> 	at org.apache.hadoop.mapreduce.v2.app.metrics.MRAppMetrics.create(MRAppMetrics.java:58)
> 	at org.apache.hadoop.mapreduce.v2.app.metrics.MRAppMetrics.create(MRAppMetrics.java:54)
> 	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.<init>(MRAppMaster.java:186)
> 	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.<init>(MRAppMaster.java:170)
> 	at org.apache.hadoop.mapreduce.v2.app.MRApp.<init>(MRApp.java:160)
> 	at org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator$1.<init>(TestRMContainerAllocator.java:372)
> 	at org.apache.hadoop.mapreduce.v2.app.TestRMContainerAllocator.testReportedAppProgress(TestRMContainerAllocator.java:371)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
> ========
> This test fails when git trunk is reset to - commit 6689d99b38c7c562e8cae484207ad30ad7b56eb5
> but passes when git trunk is reset to - commit f429fdaf78a02211c4faee54b1ee92822edc5741

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