[jira] [Created] (HIVE-26411) TestReplicationMetricCollector is flaky

["Hankó Gergely (Jira)" <ji...@apache.org>]

Hankó Gergely created HIVE-26411:
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             Summary: TestReplicationMetricCollector is flaky
                 Key: HIVE-26411
                 URL: https://issues.apache.org/jira/browse/HIVE-26411
             Project: Hive
          Issue Type: Bug
          Components: Tests
            Reporter: Hankó Gergely
            Assignee: Hankó Gergely


TestReplicationMetricCollector tests can fail intermittently because 

ReplicationMetricCollector schedules a MetrikSink thread that consumes the MetricCollector 

metricMap regularly and if this happens at the wrong time, the tests, that use the MetricCollector.getInstance().getMetrics() method, can fail.

Example stack trace:
{code:java}
java.lang.AssertionError: expected:<1> but was:<0> at org.junit.Assert.fail(Assert.java:88) at org.junit.Assert.failNotEquals(Assert.java:743) at org.junit.Assert.assertEquals(Assert.java:118) at org.junit.Assert.assertEquals(Assert.java:555) at org.junit.Assert.assertEquals(Assert.java:542) at org.apache.hadoop.hive.ql.parse.repl.metric.TestReplicationMetricCollector.testFailoverReadyDumpMetrics(TestReplicationMetricCollector.java:227){code}



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