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https://issues.apache.org/jira/browse/ARROW-9431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17352713#comment-17352713
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Uwe Korn commented on ARROW-9431:
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{quote}[~uwe] What is the intended use case? {quote}
The intention was to support pandas' {code}def __setitem__(self, key,
value){code} where key is an array and value is an array of equal length. In
fletcher we currently roundtrip to {{numpy}} for that:
https://github.com/xhochy/fletcher/blob/master/fletcher/base.py#L998-L1018 The
biggest use case for this is though the ArrowStringArray that is being built
inside of pandas currently.
> [C++/Python] Kernel for SetItem(IntegerArray, values)
> -----------------------------------------------------
>
> Key: ARROW-9431
> URL: https://issues.apache.org/jira/browse/ARROW-9431
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++, Python
> Affects Versions: 2.0.0
> Reporter: Uwe Korn
> Priority: Major
>
> We should have a kernel that allows overriding the values of an array using
> an integer array as the indexer and a scalar or array of equal length as the
> values.
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