turboFei edited a comment on issue #26086: [SPARK-29302] Make the file name of a task for dynamic partition overwrite be unique URL: https://github.com/apache/spark/pull/26086#issuecomment-547277051 > Is this different to #24142? @viirya Thanks for your reply. There is a little different. I have read the comments of #24142 and it seems there is a risk that for non-FileOutputCommitter, if a task failed and failed to cleanup task output, spark would give duplicate result. In this PR, I only named a task file with taskId and attemptId for dynamic partition overwrite, for that dynamicPartitionOverwrite would keep a filesToMove, so there is no risk to cause duplicate result. PS: I think it is rarely to meet non-FileOutputCommitter case.
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