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https://issues.apache.org/jira/browse/ARROW-12216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17415502#comment-17415502
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Neal Richardson commented on ARROW-12216:
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One (partial) option could be to set ARROW_DATASET=OFF in the rtools35 build,
which will disable all dataset features on 32-bit old windows since they seem
not to work anymore.
> [R] Proactively disable multithreading on RTools3.5 (32bit?)
> ------------------------------------------------------------
>
> Key: ARROW-12216
> URL: https://issues.apache.org/jira/browse/ARROW-12216
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Weston Pace
> Priority: Critical
> Fix For: 6.0.0
>
>
> RTools 3.5 (on Windows, possibly only on 32 bit) does not seem to support
> multithreading very well. The tests have multithreading disabled. Perhaps
> it is worth turning off multithreading proactively to avoid users running
> into errors and being stumped for a while before figuring it out.
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