[ARROW-14344] [R][Python] Crash when reading empty .feather file

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Component/s: Python, R
• Labels: R arrow bug error pandas python
• Environment: Ubuntu Server 20.04.3, arrow (R) 5.0.02, pyarrow 3.0.0 (Python), RStudio 1.4.1717, R 4.1.0
• External issue URL: https://github.com/apache/arrow/issues/29914

Language

Python R

• Assignee: Unassigned
• Reporter: Reinier van Linschoten
• Created: 15/Oct/21 14:35
• Updated: 11/Jan/23 08:39
• Resolved: 20/Oct/21 22:39

Description

I get an R Session Error in RStudio Server when I try to read an empty .feather file.

Error: The previous R session was abnormally terminated due to an unexpected crash. You may have lost workspace data as a result of this crash. 

Reproduce:

• Create empty pandas dataframe in Python
• Write to .feather file with .reset_index(drop=True) and compression="uncompressed"
• Try to read data in RStudio with arrow::read_feather(path)
• Error

I can read dataframes with one or more rows in RStudio.

I can read the empty dataframe with pandas.read_feather(). This returns an empty pandas dataframe.

Issue Links

• duplicates: ARROW-14321 [R] segfault converting dictionary ChunkedArray with 0 chunks