[jira] [Created] (HBASE-8392) TestMetricMBeanBase#testGetAttribute is flakey under hadoop2 profile

["Jonathan Hsieh (JIRA)" <ji...@apache.org>]

Jonathan Hsieh created HBASE-8392:
-------------------------------------

             Summary: TestMetricMBeanBase#testGetAttribute is flakey under hadoop2 profile
                 Key: HBASE-8392
                 URL: https://issues.apache.org/jira/browse/HBASE-8392
             Project: HBase
          Issue Type: Sub-task
          Components: hadoop2, metrics, test
    Affects Versions: 0.95.0, 0.98.0
            Reporter: Jonathan Hsieh


This specific small unit tests flakes out occasionally and blocks the medium and large tests from running.

Here's an error trace:

{code}
Error Message

expected:<2.0> but was:<0.125>
Stacktrace

junit.framework.AssertionFailedError: expected:<2.0> but was:<0.125>
	at junit.framework.Assert.fail(Assert.java:57)
	at junit.framework.Assert.failNotEquals(Assert.java:329)
	at junit.framework.Assert.assertEquals(Assert.java:120)
	at junit.framework.Assert.assertEquals(Assert.java:129)
	at junit.framework.TestCase.assertEquals(TestCase.java:288)
	at org.apache.hadoop.hbase.metrics.TestMetricsMBeanBase.testGetAttribute(TestMetricsMBeanBase.java:93)
	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 junit.framework.TestCase.runTest(TestCase.java:176)
	at junit.framework.TestCase.runBare(TestCase.java:141)
	at junit.framework.TestResult$1.protect(TestResult.java:122)
	at junit.framework.TestResult.runProtected(TestResult.java:142)
	at junit.framework.TestResult.run(TestResult.java:125)
	at junit.framework.TestCase.run(TestCase.java:129)
	at junit.framework.TestSuite.runTest(TestSuite.java:255)
	at junit.framework.TestSuite.run(TestSuite.java:250)
	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
	at org.junit.runners.Suite.runChild(Suite.java:127)
	at org.junit.runners.Suite.runChild(Suite.java:26)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
{code}

[~eclark] took a quick look and will chime in on this.

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