squito commented on issue #24264: [SPARK-27216][CORE] Upgrade RoaringBitmap to 0.7.45 to fix Kryo unsafe ser/dser issue URL: https://github.com/apache/spark/pull/24264#issuecomment-479711950 @lemire I think that's a good idea for something to do eventually, but I think that can be handled separately. IIUC, to take advantage of those performance improvements, we need to change how we're serializing the RoaringBitmaps inside spark. This is a bug fix we can get in now. I filed https://issues.apache.org/jira/browse/SPARK-27367 for this if anybody wants to follow up with that
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