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https://issues.apache.org/jira/browse/HBASE-12335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Dimiduk updated HBASE-12335:
---------------------------------
Release Note: This change alters PerformanceEvaluation to expose read
request histograms back to consumers. IntegrationTestRegionReplicaPerf takes
advantage of this by examining the histograms to determine the overall
effectiveness of the feature under test. In this case, specific summary
statistics are aggregated across all threads and all test iterations to
determine success.
> IntegrationTestRegionReplicaPerf is flaky
> -----------------------------------------
>
> Key: HBASE-12335
> URL: https://issues.apache.org/jira/browse/HBASE-12335
> Project: HBase
> Issue Type: Test
> Components: test
> Affects Versions: 0.99.0, 2.0.0
> Reporter: Nick Dimiduk
> Assignee: Nick Dimiduk
> Fix For: 2.0.0, 0.99.2
>
> Attachments: HBASE-12335.00-0.99.patch, HBASE-12335.00.patch,
> HBASE-12335.00.patch, HBASE-12335.00.patch, HBASE-12335.01-0.99.patch,
> HBASE-12335.01.patch, HBASE-12335.02.patch
>
>
> I find that this test often fails; the assertion that running with read
> replicas should complete faster than without is usually false. I need to
> investigate further as to why this is the case and how we should tune it.
> In the mean time, I'd like to change the test to assert instead on the
> average of the stdev across all the test runs in each category. Meaning,
> enabling this feature should reduce the overall latency variance experienced
> by the client.
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