Micah Kornfield created ARROW-6352:
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Summary: [Java] Add implementation of DenseUnionVector.
Key: ARROW-6352
URL: https://issues.apache.org/jira/browse/ARROW-6352
Project: Apache Arrow
Issue Type: Improvement
Reporter: Micah Kornfield
Today only Sparse unions are supported. We should have a dense union
implementation vector that conforms to the IPC protocol (the current spare
union vector doesn't do this and there are other JIRAs covering making these
compatible).
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