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https://issues.apache.org/jira/browse/ARROW-1184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189114#comment-16189114
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Bryan Cutler commented on ARROW-1184:
-------------------------------------
It's not difficult, just a good bit of work to add the ability to compare
contents of vectors for all the types. Some of that is done in integration
tests, but not for complex types. This would also need to add an API for
{{equals()}} somewhere in the vector class hierarchy.
> [Java] Dictionary.equals is not working correctly
> -------------------------------------------------
>
> Key: ARROW-1184
> URL: https://issues.apache.org/jira/browse/ARROW-1184
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Bryan Cutler
>
> The {{Dictionary.equals}} method does not return True when the dictionaries
> are equal. This is because {{equals}} is not implemented for FieldVector and
> so that comparison defaults to comparing the two objects only and not the
> vector data.
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