[GitHub] [iceberg] RussellSpitzer commented on pull request #1947: [WIP] Spark MERGE INTO Support (copy-on-write implementation)

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RussellSpitzer commented on pull request #1947:
URL: https://github.com/apache/iceberg/pull/1947#issuecomment-747498481


   One thing we've been talking about it a bit is whether or not it would be useful to tune the write portion of this. For example it may be helpful to have an independent parameter for tuning the shuffle parameters when grouping the results before writing. This probably would be good to tune with a non-spark parameter so that users can customize it apart from the normal spark.sql.shuffle parameter.


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