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https://issues.apache.org/jira/browse/ARROW-6297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Micah Kornfield resolved ARROW-6297.
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Fix Version/s: 0.15.0
Resolution: Fixed
Issue resolved by pull request 5135
[https://github.com/apache/arrow/pull/5135]
> [Java] Compare ArrowBufPointers by unsinged integers
> ----------------------------------------------------
>
> Key: ARROW-6297
> URL: https://issues.apache.org/jira/browse/ARROW-6297
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java
> Reporter: Liya Fan
> Assignee: Liya Fan
> Priority: Minor
> Labels: pull-request-available
> Fix For: 0.15.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Currently, ArrowBufPointers compare by bytes in lexicographic order. Another
> way is to compare by unsigned integers (longs, ints, & bytes).
> The second way involves additional bit operations for each iteration.
> However, it can compare 8 bytes at a time. So it is overall faster:
>
> Compare by unsigned integers:
> ArrowBufPointerBenchmarks.compareBenchmark avgt 5 65.722 ± 0.381 ns/op
>
> Compare byte-wise:
> ArrowBufPointerBenchmarks.compareBenchmark avgt 5 681.372 ± 0.604 ns/op
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