Ji Liu created ARROW-5821:
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Summary: [Java] Support compact fixed-width vectors
Key: ARROW-5821
URL: https://issues.apache.org/jira/browse/ARROW-5821
Project: Apache Arrow
Issue Type: New Feature
Reporter: Ji Liu
Assignee: Ji Liu
In shuffle stage of some applications, FixedWitdhVectors may have very little
non-null data.
In this case, directly serialize vectors is not a good choice, generally we can
compact the vector make it only holding non-null value and create a BitVector
to trace the indices for non-null values so that it could be deserialized
properly.
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