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Date: Fri, 15 Sep 2017 07:16:00 +0000 (UTC)
From: "Weiwei Yang (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.13102478.1505456186000.120441.1505459760368@Atlassian.JIRA>
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Subject: [jira] [Commented] (HDFS-12463) Ozone: Fix
 TestXceiverClientMetrics#testMetrics
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archived-at: Fri, 15 Sep 2017 07:16:05 -0000


    [ https://issues.apache.org/jira/browse/HDFS-12463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16167448#comment-16167448 ] 

Weiwei Yang commented on HDFS-12463:
------------------------------------

Hi [~linyiqun] this is introduced by HDFS-12268, could you please take a look? Thanks.

> Ozone: Fix TestXceiverClientMetrics#testMetrics 
> ------------------------------------------------
>
>                 Key: HDFS-12463
>                 URL: https://issues.apache.org/jira/browse/HDFS-12463
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Weiwei Yang
>            Priority: Minor
>
> {{TestXceiverClientMetrics#testMetrics}} is failing with following error in recent jenkins job,
> {noformat}
> java.util.ConcurrentModificationException: null
> 	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
> 	at java.util.ArrayList$Itr.next(ArrayList.java:851)
> 	at org.apache.hadoop.ozone.scm.TestXceiverClientMetrics.lambda$testMetrics$2(TestXceiverClientMetrics.java:134)
> {noformat}
> looks like a non thread safe list caused this race condition in the test case.


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