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https://issues.apache.org/jira/browse/ARROW-3826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16690058#comment-16690058
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Wes McKinney edited comment on ARROW-3826 at 11/16/18 10:17 PM:
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Well based on comparing
* Cache on: C++ library build takes ~215 seconds
https://travis-ci.org/apache/arrow/jobs/455161181
* Cache off: C++ library build takes ~616 seconds
https://travis-ci.org/apache/arrow/jobs/456156382
Can't 100% attribute that to ccache but it seems that fetching the cache takes
less than 20 seconds, so I'm going to close as won't fix
was (Author: wesmckinn):
Well based on comparing
* Cache on: C++ library build takes ~208 seconds
https://travis-ci.org/apache/arrow/jobs/456156382
* Cache off: C++ library build takes ~616 seconds
https://travis-ci.org/apache/arrow/jobs/456156382
Can't 100% attribute that to ccache but it seems that fetching the cache takes
less than 20 seconds, so I'm going to close as won't fix
> [C++] Determine if using ccache caching in Travis CI actually improves build
> times
> ----------------------------------------------------------------------------------
>
> Key: ARROW-3826
> URL: https://issues.apache.org/jira/browse/ARROW-3826
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.12.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> In the discussion for https://github.com/apache/arrow/pull/2982 I saw that
> the cache for master is over 3GB. I'm curious if maintaining such a large
> cache is inflating our test times
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