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Posted to issues@spark.apache.org by "Imran Rashid (JIRA)" <ji...@apache.org> on 2019/04/04 01:08:00 UTC

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

Imran Rashid created SPARK-27367:
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             Summary: 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: 3.0.0
            Reporter: Imran Rashid


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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