Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/9243#issuecomment-150532600
@viirya we have an outstanding issue about RoaringBitmap not being
serialized by kryo at the moment:
https://issues.apache.org/jira/browse/SPARK-11016 It sounds like we have two
bitset implementations (three if you count the JDK). What's your view on
replacing RoaringBitmap everywhere? It's kind of unfortunate Spark
reimplemented the wheel here but, given that this is done (and maybe has some
marginal advantage), what about removing this dependency entirely? that is do
you see an argument for RoaringBitmap in Spark?
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