turboFei edited a comment on issue #25795: [SPARK-29037][Core] Spark gives duplicate result when an application was killed URL: https://github.com/apache/spark/pull/25795#issuecomment-532191422 I think it is feasible to detect concurrent writes. As known, when dynamicPartitionOverwrite is true, the job attempt path is `.spark-staging-${UUID}`. when dynamicPartitionOverwrite is false, it is `_temporary`. We just need check the existences of these paths and throw exception to fast fail when concurrent writes are detected, Include: - dynamicPartitionOverwrite and dynamicPartitionOverwrite - dynamicPartitionOverwrite and staticPartitionOverwrite/non-partitioned table write - staticPartitionOverwrite/non-partitioned table write and staticPartitionOverwrite/non-partitioned table write @advancedxy @cloud-fan
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