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https://issues.apache.org/jira/browse/ARROW-5207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-5207:
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External issue URL: https://github.com/apache/arrow/issues/21682
> [Java] add APIs to support vector reuse
> ---------------------------------------
>
> Key: ARROW-5207
> URL: https://issues.apache.org/jira/browse/ARROW-5207
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java
> Reporter: Ji Liu
> Assignee: Ji Liu
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> In some scenarios we hope that ValueVector could be reused to reduce creation
> overhead. This is very common in shuffle stage, it's no need to create
> ValueVector or realloc buffers every time, suppose that the recordCount of
> ValueVector and capacity of its buffers is written in stream, when we
> deserialize it, we can simply judge whether realloc is needed through
> dataLength.
> My proposal is that add APIs in ValueVector to process this logic, otherwise
> users have to implement by themselves if they want to reuse which is not
> user-friendly.
> If you agree with this, I would like to take this ticket. Thanks
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