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Posted to issues@arrow.apache.org by "Liya Fan (Jira)" <ji...@apache.org> on 2019/11/04 08:44:00 UTC
[jira] [Closed] (ARROW-6935) [Java] Improve the performance of
comparing two blocks of heap data
[ https://issues.apache.org/jira/browse/ARROW-6935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Liya Fan closed ARROW-6935.
---------------------------
Resolution: Won't Fix
> [Java] Improve the performance of comparing two blocks of heap data
> -------------------------------------------------------------------
>
> Key: ARROW-6935
> URL: https://issues.apache.org/jira/browse/ARROW-6935
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java
> Reporter: Liya Fan
> Assignee: Liya Fan
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> Implement methods to compare data word by word, instead of byte by byte.
> Benchmarks shows that there is a 4.5x performance improvement:
> ByteFunctionHelpersBenchmarks.builtInByteArrayEquals avgt 5 437.504 ± 1.120 ns/op
> ByteFunctionHelpersBenchmarks.byteArrayEquals avgt 5 97.700 ± 0.178 ns/op
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