[jira] [Commented] (ARROW-646) Cache miniconda packages

["Wes McKinney (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964454#comment-15964454 ] 

Wes McKinney commented on ARROW-646:
------------------------------------

[~cpcloud] [~leif] I marked this for 0.3 -- with the rampant conda / anaconda.org timeouts, if we can cache our conda tarballs using Travis CI caching we may be able to both speed up builds and reduce flakiness. I think this may involve changing the conda cache directory to be someplace other than the miniconda/ install in https://github.com/apache/arrow/blob/master/ci/travis_install_conda.sh#L27. 

> Cache miniconda packages
> ------------------------
>
>                 Key: ARROW-646
>                 URL: https://issues.apache.org/jira/browse/ARROW-646
>             Project: Apache Arrow
>          Issue Type: Improvement
>            Reporter: Uwe L. Korn
>            Assignee: Uwe L. Korn
>             Fix For: 0.3.0
>
>
> The unpacking of freshly downloaded conda packages makes up significant time in our build. Locally this made the conda env creation for Parquet go from 1min to 14s.



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