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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12335) IntegrationTestRegionReplicaPerf is flaky
Date Sat, 01 Nov 2014 02:22:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14192920#comment-14192920
] 

Hudson commented on HBASE-12335:
--------------------------------

SUCCESS: Integrated in HBase-TRUNK #5734 (See [https://builds.apache.org/job/HBase-TRUNK/5734/])
HBASE-12335 IntegrationTestRegionReplicaPerf is flaky (ndimiduk: rev f5d6314c87b0375fd455980b0c18b650a466d840)
* hbase-it/src/test/java/org/apache/hadoop/hbase/IntegrationTestRegionReplicaPerf.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/PerformanceEvaluation.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/util/YammerHistogramUtils.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/util/AbstractHBaseTool.java


> 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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