[ARROW-14159] [R] Re-allow some multithreading on Windows

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: 12.0.0
• Component/s: R
• External issue URL: https://github.com/apache/arrow/issues/29747
• Assignee: Unassigned
• Reporter: Neal Richardson
• Created: 28/Sep/21 20:20
• Updated: 11/Jan/23 08:38

Description

Followup to ARROW-8379, which set use_threads = FALSE on Windows. See discussion about adding more controls, disabling threading in some places and not others, etc. We want to do this soon after release so that we have a few months to see how things behave on CI before releasing again.

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Collecting some CI hangs after ARROW-8379

1. Rtools35, 64bit test suite hangs:

https://github.com/apache/arrow/pull/11290/checks?check_run_id=3767787034

** running tests for arch 'i386' ...
  Running 'testthat.R' [17s]
 OK
** running tests for arch 'x64' ...

Error: Error: <rlib_error_2_0 in process_get_error_connection(self, private):
 stderr is not a pipe.>