Github user kiszk commented on the pull request:
https://github.com/apache/spark/pull/10833#issuecomment-172962450
I see the OnHeap case. I overlooked this.
May I add the similar benchmark for OffHeap for information? Or, do you
have the performance data for off-heap, too?
I thought that to reduce memory foodprint would be good in general. Do you
want to focus on performance to write data by eliminating overhead to use bit
vector?
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