[jira] [Updated] (ARROW-3495) [Java] Optimize bit operations performance

["Li Jin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-3495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Li Jin updated ARROW-3495:
--------------------------
    Summary: [Java] Optimize bit operations performance  (was: Optimize bit operations performance)

> [Java] Optimize bit operations performance
> ------------------------------------------
>
>                 Key: ARROW-3495
>                 URL: https://issues.apache.org/jira/browse/ARROW-3495
>             Project: Apache Arrow
>          Issue Type: Task
>          Components: Java
>    Affects Versions: 0.11.0
>            Reporter: Li Jin
>            Priority: Major
>
> From [~atrivedi]'s benchmark finding:
> 2) Materialize values from Validity and Value direct buffers instead of
> calling getInt() function on the IntVector. This is implemented as a new
> Unsafe reader type (
> [https://github.com/animeshtrivedi/benchmarking-arrow/blob/master/src/main/java/com/github/animeshtrivedi/benchmark/ArrowReaderUnsafe.java#L31]
> )
> 3) Optimize bitmap operation to check if a bit is set or not (
> [https://github.com/animeshtrivedi/benchmarking-arrow/blob/master/src/main/java/com/github/animeshtrivedi/benchmark/ArrowReaderUnsafe.java#L23]
> )



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