cloud-fan commented on issue #26159: [SPARK-29506][SQL] Use dynamicPartitionOverwrite in FileCommitProtocol when insert into hive table URL: https://github.com/apache/spark/pull/26159#issuecomment-544373295 IIUC `HadoopMapReduceCommitProtocol` is a wrapper of the hadoop MR committer. The code you refer to that proves the inefficient is all from hadoop MR committer, right?
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