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From "nkeywal (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5064) use surefire tests parallelization
Date Mon, 19 Dec 2011 16:29:30 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13172383#comment-13172383
] 

nkeywal commented on HBASE-5064:
--------------------------------

@stack: yes,it should be that there are two many threads
- jvm limitation that we should manage with -Xmx or -Xss => but then we should reproduce
it on our machine as well (asd far as I know no one does reproduce it locally), and we already
set it to -Xmx1900m
- a limitation on the total number of thread on the machine => but it's quite strange
- the ulimit per process, but then running the tests on multiple processes should not change
the probability to have an issue

The patch v2+ changed HBase configuration, On TestAdmin, we need 40 less threads, so the benefit
is not high. And I saw no real impact.

There are some stuff to look at, as sysctl kernel.threads-max, i will check if it is printed
in the default script.


                
> use surefire tests parallelization
> ----------------------------------
>
>                 Key: HBASE-5064
>                 URL: https://issues.apache.org/jira/browse/HBASE-5064
>             Project: HBase
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 0.94.0
>            Reporter: nkeywal
>            Assignee: nkeywal
>            Priority: Minor
>         Attachments: 5064.patch, 5064.patch, 5064.v2.patch, 5064.v3.patch, 5064.v4.patch,
5064.v5.patch, 5064.v6.patch, 5064.v7.patch
>
>
> To be tried multiple times on hadoop-qa before committing.

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