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https://issues.apache.org/jira/browse/ARROW-2071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16352694#comment-16352694
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ASF GitHub Bot commented on ARROW-2071:
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pitrou opened a new pull request #1561: ARROW-2071: [Python] Fix test slowness
on Travis-CI
URL: https://github.com/apache/arrow/pull/1561
The pytorch build from the "soumith" channel can be buggy and fail importing
with a symbol error. In that case avoid trying "import torch" extremely often
as this spends CPU time in the dynamic loader.
Also lighten the plasma tests when run with Valgrind.
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> [Python] Reduce runtime of builds in Travis CI
> ----------------------------------------------
>
> Key: ARROW-2071
> URL: https://issues.apache.org/jira/browse/ARROW-2071
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Reporter: Wes McKinney
> Assignee: Antoine Pitrou
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.9.0
>
>
> For some reason, recently each Python build has been taking about 15 minutes
> to run. I speculate this is due to VM thrashing caused by reduced resources
> on the Travis CI workers, related to the problem I fixed in ARROW-2062.
> We should experiment, but it seems like perhaps this can be fixed either by:
> * Reducing the size of the Plasma store on Travis CI
> * Disabling valgrind in Plasma tests
> The slowness could be caused by something else, though, so we should
> investigate (and have pytest report slow tests in the logs)
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