Github user wangyum commented on the issue:
https://github.com/apache/spark/pull/21556
Another performance test:
<img width="1008" alt="spark_24549"
src="https://user-images.githubusercontent.com/5399861/41448622-437d029a-708e-11e8-9c18-5d9f17cd1edf.png";>--- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
![https://user-images.githubusercontent.com/5399861/41448622-437d029a-708e-11e8-9c18-5d9f17cd1edf.png"](https://user-images.githubusercontent.com/5399861/41448622-437d029a-708e-11e8-9c18-5d9f17cd1edf.png"){kind=link}