[ARROW-6622] [C++][R] SubTreeFileSystem path error on Windows

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: C++, R
• Labels: filesystem pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22976
• Assignee: Neal Richardson
• Reporter: Neal Richardson
• Created: 19/Sep/19 19:08
• Updated: 11/Jan/23 07:48
• Resolved: 25/Sep/19 14:05

Description

On ARROW-6438, we got this error on Windows testing out the subtree:

> test_check("arrow")
  -- 1. Error: SubTreeFilesystem (@test-filesystem.R#86)  ------------------------
  Unknown error: Underlying filesystem returned path 'C:/Users/appveyor/AppData/Local/Temp/1/RtmpqWFbxi/working_dir/Rtmp2Dfa6d/file2904934312d/DESCRIPTION', which is not a subpath of 'C:/Users/appveyor/AppData/Local/Temp/1\RtmpqWFbxi/working_dir\Rtmp2Dfa6d\file2904934312d/'
  1: st_fs$GetTargetStats(c("DESCRIPTION", "test", "nope", "DESC.txt")) at testthat/test-filesystem.R:86
  2: map(fs___FileSystem__GetTargetStats_Paths(self, x), shared_ptr, class = FileStats)
  3: fs___FileSystem__GetTargetStats_Paths(self, x)
  
  == testthat results  ===========================================================
  [ OK: 992 | SKIPPED: 2 | WARNINGS: 0 | FAILED: 1 ]

Notice the mixture of forward slashes and backslashes in the paths so that they don't match up.

I'm not sure which layer is doing the wrong thing.

Issue Links

• links to: GitHub Pull Request #5445
• links to: GitHub Pull Request #5449