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https://issues.apache.org/jira/browse/ARROW-5763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16887479#comment-16887479
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Paul Taylor commented on ARROW-5763:
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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.
> [JS] enable integration tests for MapVector
> -------------------------------------------
>
> Key: ARROW-5763
> URL: https://issues.apache.org/jira/browse/ARROW-5763
> Project: Apache Arrow
> Issue Type: New Feature
> Components: JavaScript
> Reporter: Benjamin Kietzman
> Priority: Minor
>
> As of 0.14, C++ and Java support Map arrays those implementations pass
> integration tests. JS has a MapVector and some unit tests for it, but it
> should be tested against other implementations as well
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