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From "Mohamed Zenadi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARROW-380) [Java] optimize null count when serializing vectors.
Date Thu, 17 Nov 2016 12:03:58 GMT

    [ https://issues.apache.org/jira/browse/ARROW-380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15673533#comment-15673533
] 

Mohamed Zenadi commented on ARROW-380:
--------------------------------------

Do you think that adding `getSetCount` and `getUnsetCount` to `BitVector`'s accessor is OK?


> [Java] optimize null count when serializing vectors.
> ----------------------------------------------------
>
>                 Key: ARROW-380
>                 URL: https://issues.apache.org/jira/browse/ARROW-380
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Java - Vectors
>            Reporter: Julien Le Dem
>              Labels: newbie
>
> nulls are stored in bits. We should be able to use more efficient ways to count nulls:
> https://github.com/apache/arrow/blob/6996c17f70dc13659c37dfaa39bc28e7777ca6a6/java/vector/src/main/java/org/apache/arrow/vector/VectorUnloader.java#L68



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