[ARROW-9865] How to Update a Dictionary - Examples needed

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: JavaScript, Python
• External issue URL: https://github.com/apache/arrow/issues/25902
• Assignee: Unassigned
• Reporter: Alex Monahan
• Created: 26/Aug/20 19:19
• Updated: 11/Jan/23 08:09
• Resolved: 25/Apr/21 18:27

Description

How can I do an in-place update on a specific value in a dictionary encoded column in an Arrow Table?

 

I have searched all issues and all of the documentation that I can find, and I still can't figure out how to add a new item to a dictionary. The new item I would like to add is different than any previously added value, so it is not already in the dictionary keys. Is this possible? 

I am working in the JS client, but a Python example may be enough to point me in the right direction.