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https://issues.apache.org/jira/browse/ARROW-17919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Arrow JIRA Bot reassigned ARROW-17919:
---------------------------------------------
Assignee: (was: Larry White)
> [Java] Potentially inefficient variable-width vector reallocation
> -----------------------------------------------------------------
>
> Key: ARROW-17919
> URL: https://issues.apache.org/jira/browse/ARROW-17919
> Project: Apache Arrow
> Issue Type: Wish
> Components: Java
> Reporter: Antoine Pitrou
> Priority: Minor
>
> In several places in the Java codebase you can see this kind of pattern:
> {code:java}
> while (vector.getDataBuffer().capacity() < toCapacity) {
> vector.reallocDataBuffer();
> }
> {code}
> In the event that a much larger capacity is requested, this will spuriously
> make several reallocations (doubling the capacity each time).
> It would probably be more efficient to reallocate directly to satisfy the
> desired capacity.
> Coincidentally, there's a {{reallocDataBuffer}} overload that seems to do
> just that.
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