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https://issues.apache.org/jira/browse/ARROW-5762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16887544#comment-16887544
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Paul Taylor commented on ARROW-5762:
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After reviewing the C++, the JS version of the Map type is not the same (it's
essentially a Struct except instead of accessing child fields by field index,
they're accessed by name). We should absolutely update the JS Map
implementation before the 1.0 release.
> [Integration][JS] Integration Tests for Map Type
> ------------------------------------------------
>
> Key: ARROW-5762
> URL: https://issues.apache.org/jira/browse/ARROW-5762
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Integration, JavaScript
> Reporter: Bryan Cutler
> Priority: Major
>
> ARROW-1279 enabled integration tests for MapType between Java and C++, but
> JavaScript had to be disabled for the map case due to an error. Once this is
> fixed, {{generate_map_case}} could be moved under {{generate_nested_case}}
> with the other nested types.
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