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https://issues.apache.org/jira/browse/HADOOP-10058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13798614#comment-13798614
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Akira AJISAKA commented on HADOOP-10058:
----------------------------------------
The test fails at
{code}
//When we call stop, at most two sources will be consumed by each sink
thread.
verify(sink1, atMost(2)).putMetrics(r1.capture());
{code}
IMO, TestSink.putMetrics() is called at most three times because there are
three sources to be consumed. The three sources are s0rec, s1rec, and
MetricsSystem.
I change the test code and attach a patch soon.
> TestMetricsSystemImpl fails on trunk
> ------------------------------------
>
> Key: HADOOP-10058
> URL: https://issues.apache.org/jira/browse/HADOOP-10058
> Project: Hadoop Common
> Issue Type: Bug
> Components: metrics
> Affects Versions: 3.0.0
> Environment: Mac OS 10.8, Java7u40
> Reporter: Akira AJISAKA
> Assignee: Akira AJISAKA
> Attachments:
> org.apache.hadoop.metrics2.impl.TestMetricsSystemImpl-output_SUCCESS.txt,
> org.apache.hadoop.metrics2.impl.TestMetricsSystemImpl-output.txt,
> org.apache.hadoop.metrics2.impl.TestMetricsSystemImpl_SUCCESS.txt,
> org.apache.hadoop.metrics2.impl.TestMetricsSystemImpl.txt
>
>
> Here is the output when I executed "mvn test -Dtest=TestMetricsSystemImpl".
> {code}
> Failed tests:
> TestMetricsSystemImpl.testInitFirstVerifyStopInvokedImmediately:114
> Wanted at most 2 times but was 3
> Tests run: 6, Failures: 1, Errors: 0, Skipped: 0
> {code}
> I found the test doesn't always fail. The test sometimes success.
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