[ARROW-6760] [C++] JSON: improve error message when column changed type

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: Python
• Labels: pull-request-available
• Flags: Important
• External issue URL: https://github.com/apache/arrow/issues/23099
• Assignee: Ben Kietzman
• Reporter: harikrishnan
• Created: 02/Oct/19 03:40
• Updated: 11/Jan/23 07:49
• Resolved: 04/Oct/19 15:49

Description

When a column accidentally changes type in a JSON file (which is not supported), it would be nice to get the column name that gives this problem in the error message.

—

I am trying to parse a simple json file. While doing so, am getting the error  JSON parse error: A column changed from string to number

from pyarrow import json
r = json.read_json('dummy.jl')

 

Issue Links

• links to: GitHub Pull Request #5571