[
https://issues.apache.org/jira/browse/ARROW-9071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Antoine Pitrou resolved ARROW-9071.
-----------------------------------
Resolution: Fixed
Issue resolved by pull request 7386
[https://github.com/apache/arrow/pull/7386]
> [C++] MakeArrayOfNull makes invalid ListArray
> ---------------------------------------------
>
> Key: ARROW-9071
> URL: https://issues.apache.org/jira/browse/ARROW-9071
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Python
> Reporter: Zhuo Peng
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> One way to reproduce this bug is:
>
> >>> a = pa.array([[1, 2]])
> >>> b = pa.array([None, None], type=pa.null())
> >>> t1 = pa.Table.from_arrays([a], ["a"])
> >>> t2 = pa.Table.from_arrays([b], ["b"])
>
> >>> pa.concat_tables([t1, t2], promote=True)
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "pyarrow/table.pxi", line 2138, in pyarrow.lib.concat_tables
> File "pyarrow/public-api.pxi", line 390, in pyarrow.lib.pyarrow_wrap_table
> File "pyarrow/error.pxi", line 85, in pyarrow.lib.check_status
> pyarrow.lib.ArrowInvalid: Column 0: In chunk 1: Invalid: List child array
> invalid: Invalid: Buffer #1 too small in array of type int64 and length 2:
> expected at least 16 byte(s), got 12
> (because concat_tables(promote=True) will call MakeArrayOfNulls
> ([https://github.com/apache/arrow/blob/ec3bae18157723411bb772fca628cbd02eea5c25/cpp/src/arrow/table.cc#L647))|https://github.com/apache/arrow/blob/ec3bae18157723411bb772fca628cbd02eea5c25/cpp/src/arrow/table.cc#L647)']
>
> The code here seems incorrect:
> [https://github.com/apache/arrow/blob/ec3bae18157723411bb772fca628cbd02eea5c25/cpp/src/arrow/array/util.cc#L218]
> the length of the child array of a ListArray may not equal to the length of
> the ListArray.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
