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https://issues.apache.org/jira/browse/HBASE-13668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546334#comment-14546334
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Andrew Purtell commented on HBASE-13668:
----------------------------------------
Related, and what I've sen up on Jenkins before:
{noformat}
test(org.apache.hadoop.hbase.regionserver.TestFlushRegionEntry) Time elapsed:
1.452 sec <<< FAILURE!
java.lang.AssertionError: expected:<369241501> but was:<-369241502>
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.hbase.regionserver.TestFlushRegionEntry.test(TestFlushRegionEntry.java:40)
{noformat}
FlushRegionEntry includes the amount of remaining delay, a _wall clock time
dependent value_, into its calculation of hashCode. The test injects a
ManualEnvironmentEdge with a fixed value for currentTime, with the expectation
this will produce objects that are equal to each other, but
TestFlushRegionEntry is a small test, so isn't the only test running in the
JVM, or using EnvironmentEdgeManager.
Rather than messing with EnviornmentEdgeManager this test should probably spy
on the FlushRegionEntry objects and substitute a fixed value for the
potentially variable return value from FlushRegionEntry#getDelay().
> [0.98] TestFlushRegonEntry is flaky
> -----------------------------------
>
> Key: HBASE-13668
> URL: https://issues.apache.org/jira/browse/HBASE-13668
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.13
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Minor
>
> {noformat}
> Flaked tests:
> org.apache.hadoop.hbase.regionserver.TestFlushRegionEntry.test
> (org.apache.hadoop.hbase.regionserver.TestFlushRegionEntry)
> Run 1: TestFlushRegionEntry.test:41 expected:
>
> org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushRegionEntry<[flush
> region null]>
> but was:
>
> org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushRegionEntry<[flush
> region null]>
> Run 2: PASS
> {noformat}
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