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Posted to issues@spark.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2020/03/16 22:51:05 UTC

[jira] [Updated] (SPARK-27367) Faster RoaringBitmap Serialization with v0.8.0

     [ https://issues.apache.org/jira/browse/SPARK-27367?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated SPARK-27367:
----------------------------------
    Affects Version/s:     (was: 3.0.0)
                       3.1.0

> Faster RoaringBitmap Serialization with v0.8.0
> ----------------------------------------------
>
>                 Key: SPARK-27367
>                 URL: https://issues.apache.org/jira/browse/SPARK-27367
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 3.1.0
>            Reporter: Imran Rashid
>            Priority: Major
>
> RoaringBitmap 0.8.0 adds faster serde, but also requires us to change how we call the serde routines slightly to take advantage of it.  This is probably a worthwhile optimization as the every shuffle map task with a large # of partitions generates these bitmaps, and the driver especially has to deserialize many of these messages.
> See 
> * https://github.com/apache/spark/pull/24264#issuecomment-479675572
> * https://github.com/RoaringBitmap/RoaringBitmap/pull/325
> * https://github.com/RoaringBitmap/RoaringBitmap/issues/319



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