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From "nkeywal (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4847) Activate single jvm for small tests on jenkins
Date Thu, 01 Dec 2011 13:16:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13160899#comment-13160899
] 

nkeywal commented on HBASE-4847:
--------------------------------

Well, as with this patch all small tests are executed in a shared jvm, we can see some side
effects. However, I ran these test more than 20 times, and it's working in my env. I deactivated
parallelism to avoid random results. So it's strange.

I went to the debugger for TestMinVersions#testBaseCase, and it seems the only to get this
results is using a wrong EnvironmentEdgeManager. But I checked that only the default is used
for small tests. The patch v7 add a check & a reset for the EnvironmentEdgeManager, I
will see what are the results...
                
> Activate single jvm for small tests on jenkins
> ----------------------------------------------
>
>                 Key: HBASE-4847
>                 URL: https://issues.apache.org/jira/browse/HBASE-4847
>             Project: HBase
>          Issue Type: Improvement
>          Components: build, test
>    Affects Versions: 0.94.0
>         Environment: build
>            Reporter: nkeywal
>            Assignee: nkeywal
>            Priority: Minor
>         Attachments: 4847_all.v4.patch, 4847_all.v5.patch, 4847_all.v6.patch, 4847_all.v6.patch,
4847_all.v7.patch, 4847_pom.patch, 4847_pom.v2.patch, 4847_pom.v2.patch, 4847_pom.v2.patch,
4847_pom.v3.patch
>
>
> This will not revolutionate performances alone. We will win between 1 to 4 minutes.
> But we win as well:
>  - it's a step for parallelizing the tests
>  - new tests are less expensive as they do not create a new jvm: it's a continuous win
>  - it will allow to push it on dev env while having the same env on dev & on build,
and 3 minutes are 10% of small + medium tests execution time.
> I will do a few "submit patch" to see if it works well before asking for the real commit.

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