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

["Todd Farmer (Jira)" <ji...@apache.org>]

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

Todd Farmer reassigned ARROW-3495:
----------------------------------

    Assignee:     (was: Animesh Trivedi)

This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.

> [Java] Optimize bit operations performance
> ------------------------------------------
>
>                 Key: ARROW-3495
>                 URL: https://issues.apache.org/jira/browse/ARROW-3495
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Java
>    Affects Versions: 0.11.0
>            Reporter: Li Jin
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> 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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