Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/5042#issuecomment-92442370
Actually, on giving this a closer look I'm not sure whether this faithfully
respects all of the possible Parquet configurations for controlling
OutputCommitter behavior. For instance, it looks like there's a
`ParquetOutputFormat.ENABLE_JOB_SUMMARY` configuration that can be used to
suppress the writing of the summary file
(https://github.com/Parquet/parquet-mr/blame/fa8957d7939b59e8d391fa17000b34e865de015d/parquet-hadoop/src/main/java/parquet/hadoop/ParquetOutputCommitter.java#L48).
I don't really know much about Parquet, so I can't really speak to whether
this is a configuration that would be commonly used, but we should probably try
to support it.
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