[ 
https://issues.apache.org/jira/browse/HDDS-2053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Doroszlai, Attila updated HDDS-2053:
------------------------------------
    Description: 
{{TestOzoneManagerRatisServer}} is failing on trunk with the following error
{noformat}
[ERROR] 
verifyRaftGroupIdGenerationWithCustomOmServiceId(org.apache.hadoop.ozone.om.ratis.TestOzoneManagerRatisServer)
  Time elapsed: 0.418 s  <<< ERROR!
org.apache.hadoop.metrics2.MetricsException: Metrics source 
OzoneManagerDoubleBufferMetrics already exists!
        at 
org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newSourceName(DefaultMetricsSystem.java:152)
        at 
org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.sourceName(DefaultMetricsSystem.java:125)
        at 
org.apache.hadoop.metrics2.impl.MetricsSystemImpl.register(MetricsSystemImpl.java:229)
        at 
org.apache.hadoop.ozone.om.ratis.metrics.OzoneManagerDoubleBufferMetrics.create(OzoneManagerDoubleBufferMetrics.java:50)
        at 
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.<init>(OzoneManagerDoubleBuffer.java:110)
        at 
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.<init>(OzoneManagerDoubleBuffer.java:88)
        at 
org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.<init>(OzoneManagerStateMachine.java:87)
        at 
org.apache.hadoop.ozone.om.ratis.OzoneManagerRatisServer.getStateMachine(OzoneManagerRatisServer.java:314)
        at 
org.apache.hadoop.ozone.om.ratis.OzoneManagerRatisServer.<init>(OzoneManagerRatisServer.java:244)
        at 
org.apache.hadoop.ozone.om.ratis.OzoneManagerRatisServer.newOMRatisServer(OzoneManagerRatisServer.java:302)
        at 
org.apache.hadoop.ozone.om.ratis.TestOzoneManagerRatisServer.verifyRaftGroupIdGenerationWithCustomOmServiceId(TestOzoneManagerRatisServer.java:209)
...
{noformat}

(Thanks [~nandakumar131] for the stack trace.)

> Fix TestOzoneManagerRatisServer failure
> ---------------------------------------
>
>                 Key: HDDS-2053
>                 URL: https://issues.apache.org/jira/browse/HDDS-2053
>             Project: Hadoop Distributed Data Store
>          Issue Type: Test
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 2.5h
>  Remaining Estimate: 0h
>
> {{TestOzoneManagerRatisServer}} is failing on trunk with the following error
> {noformat}
> [ERROR] 
> verifyRaftGroupIdGenerationWithCustomOmServiceId(org.apache.hadoop.ozone.om.ratis.TestOzoneManagerRatisServer)
>   Time elapsed: 0.418 s  <<< ERROR!
> org.apache.hadoop.metrics2.MetricsException: Metrics source 
> OzoneManagerDoubleBufferMetrics already exists!
>       at 
> org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newSourceName(DefaultMetricsSystem.java:152)
>       at 
> org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.sourceName(DefaultMetricsSystem.java:125)
>       at 
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.register(MetricsSystemImpl.java:229)
>       at 
> org.apache.hadoop.ozone.om.ratis.metrics.OzoneManagerDoubleBufferMetrics.create(OzoneManagerDoubleBufferMetrics.java:50)
>       at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.<init>(OzoneManagerDoubleBuffer.java:110)
>       at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.<init>(OzoneManagerDoubleBuffer.java:88)
>       at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.<init>(OzoneManagerStateMachine.java:87)
>       at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerRatisServer.getStateMachine(OzoneManagerRatisServer.java:314)
>       at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerRatisServer.<init>(OzoneManagerRatisServer.java:244)
>       at 
> org.apache.hadoop.ozone.om.ratis.OzoneManagerRatisServer.newOMRatisServer(OzoneManagerRatisServer.java:302)
>       at 
> org.apache.hadoop.ozone.om.ratis.TestOzoneManagerRatisServer.verifyRaftGroupIdGenerationWithCustomOmServiceId(TestOzoneManagerRatisServer.java:209)
> ...
> {noformat}
> (Thanks [~nandakumar131] for the stack trace.)



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