Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/22427
Thank you for review, @maropu .
1. Yes. It's the same. The first one limits the memory usage for write
operation. The second one limits the memory usage for compression operation.
2. Yes. As you see in this PR, it's performance sensitive. Actually, all
parameters of Parquet/ORC are performance sensitive.
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