gengliangwang commented on issue #27478: [SPARK-25829][SQL] Add config `spark.sql.deduplicateMapKey.lastWinsPolicy.enabled` and change the default behavior URL: https://github.com/apache/spark/pull/27478#issuecomment-585039004 I searched "deduplicate map key" and there is no result. Since there will be runtime exception on duplicated keys, how about renaming the config to `spark.sql.allowDuplicatedMapKeys.enabled`?
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