Github user viirya commented on the issue:
https://github.com/apache/spark/pull/13701
@gatorsmile This is the benchmark results. No significant difference.
Before this patch:
Java HotSpot(TM) 64-Bit Server VM 1.8.0_71-b15 on Linux
3.19.0-25-generic
Intel(R) Core(TM) i7-5557U CPU @ 3.10GHz
Parquet reader: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
reading Parquet file 855 / 1162 2.4
417.2 1.0X
After this patch:
Java HotSpot(TM) 64-Bit Server VM 1.8.0_71-b15 on Linux
3.19.0-25-generic
Intel(R) Core(TM) i7-5557U CPU @ 3.10GHz
Parquet reader: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
reading Parquet file 874 / 1228 2.3
426.7 1.0X
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