[ARROW-17256] [Python] Can't call combine_chunks on empty ChunkedArray

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 10.0.0
• Component/s: Python
• Labels: pull-request-available
• Environment: pyarrow 8.0.0 ; python 3.9
• External issue URL: https://github.com/apache/arrow/issues/32539

Language

python

• Assignee: &res
• Reporter: &res
• Created: 29/Jul/22 17:45
• Updated: 11/Jan/23 11:49
• Resolved: 08/Aug/22 19:22

Description

When calling:

pa.chunked_array([], type=pa.bool_()).combine_chunks()

I get this error:

 pyarrow/table.pxi:700: in pyarrow.lib.ChunkedArray.combine_chunks
    ???
pyarrow/array.pxi:2868: in pyarrow.lib.concat_arrays
    ???
pyarrow/error.pxi:144: in pyarrow.lib.pyarrow_internal_check_status
    ???
pyarrow/error.pxi:100: in pyarrow.lib.check_status
    ???
E   pyarrow.lib.ArrowInvalid: Must pass at least one array

While this works:

pa.chunked_array([pa.array([], pa.bool_())], type=pa.bool_()) 

In the first case, it should return an empty BoolArray as well.

Issue Links

• links to: GitHub Pull Request #13757