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From "Gabriel Reid (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CRUNCH-42) Improve speed of running integration tests
Date Tue, 14 Aug 2012 18:37:38 GMT

    [ https://issues.apache.org/jira/browse/CRUNCH-42?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13434370#comment-13434370
] 

Gabriel Reid commented on CRUNCH-42:
------------------------------------

Yep, it seems to be due to a change in the dependencies -- running with hadoop 1.0.3 still
seems to be pretty slow, and running with CDH3 (the version that was in the pom when I made
the original patch) was fast. Using hadoop 2.0 also seems to run quickly with this change.
I was actually starting to think that I had imagined running "mvn verify" in under 10 minutes,
and it was starting to worry me :-)

In any case, I believe that there's a config setting that can be set somewhere in hadoop 1.x
to change the poll interval as well -- I'm currently trying to hunt that down and find the
best place to set it, and then the performance improvement should work everywhere.
                
> Improve speed of running integration tests
> ------------------------------------------
>
>                 Key: CRUNCH-42
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-42
>             Project: Crunch
>          Issue Type: Improvement
>    Affects Versions: 0.3.0
>            Reporter: Gabriel Reid
>            Assignee: Gabriel Reid
>            Priority: Minor
>         Attachments: 0001-Use-short-job-poll-interval-when-in-local-mode.patch
>
>
> The CrunchJobControl currently uses a hard-coded poll interval of 5 seconds to check
on running jobs. This is valid when running jobs on large datasets on a cluster, but results
in unnecessary waiting when running in local mode. By using a smaller poll interval when running
in local mode, the performance of the integration tests can be greatly improved.

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