[ARROW-7844] [R] array_to_vector is not thread safe

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17.0
• Component/s: R
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24072
• Assignee: Francois Saint-Jacques
• Reporter: Neal Richardson
• Created: 12/Feb/20 22:48
• Updated: 11/Jan/23 07:56
• Resolved: 13/Feb/20 21:16

Description

See https://travis-ci.org/ursa-labs/arrow-r-nightly/jobs/649649349#L373-L375 for an example on public CI. I was seeing this locally this week but figured I'd screwed up my env somehow.

── 1. Failure: Lists are preserved when writing/reading from Parquet (@test-parq
  `object` not equivalent to `expected`.
  Component "num": Component 1: target is numeric, current is character

It's not always the same column in the data.frame that is affected. Also strange that it's only one column. You'd think that if it were transposing the order somehow, you'd get two that were swapped.

The test itself is straightforward (https://github.com/apache/arrow/blob/master/r/tests/testthat/test-parquet.R#L124-L137) so this is somewhat troubling.

Issue Links

• links to: GitHub Pull Request #6419