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https://issues.apache.org/jira/browse/ARROW-542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858312#comment-15858312
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Julien Le Dem commented on ARROW-542:
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the Field metadata refers to a dictionaryID. The DictionaryBatch contains the
dictionary data for that id.
> [Java] Implement dictionaries in stream/file encoding
> -----------------------------------------------------
>
> Key: ARROW-542
> URL: https://issues.apache.org/jira/browse/ARROW-542
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java - Vectors
> Reporter: Emilio Lahr-Vivaz
> Assignee: Emilio Lahr-Vivaz
>
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