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https://issues.apache.org/jira/browse/HBASE-21097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16590635#comment-16590635
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stack commented on HBASE-21097:
-------------------------------
Try it. +1. What versions does it go to?
> Flush pressure assertion may fail in testFlushThroughputTuning
> ---------------------------------------------------------------
>
> Key: HBASE-21097
> URL: https://issues.apache.org/jira/browse/HBASE-21097
> Project: HBase
> Issue Type: Test
> Reporter: Ted Yu
> Priority: Major
> Attachments: 21097.v1.txt
>
>
> From
> https://builds.apache.org/job/PreCommit-HBASE-Build/14137/artifact/patchprocess/patch-unit-hbase-server.txt
> :
> {code}
> [ERROR]
> testFlushThroughputTuning(org.apache.hadoop.hbase.regionserver.throttle.TestFlushWithThroughputController)
> Time elapsed: 17.446 s <<< FAILURE!
> java.lang.AssertionError: expected:<0.0> but was:<1.2906294173808417E-6>
> at
> org.apache.hadoop.hbase.regionserver.throttle.TestFlushWithThroughputController.testFlushThroughputTuning(TestFlushWithThroughputController.java:185)
> {code}
> Here is the related assertion:
> {code}
> assertEquals(0.0, regionServer.getFlushPressure(), EPSILON);
> {code}
> where EPSILON = 1E-6
> In the above case, due to margin of 2.9E-7, the assertion didn't pass.
> It seems the epsilon can be adjusted to accommodate different workload /
> hardware combination.
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