wangjiaochun opened a new pull request #24127: [SPARK-27186][CORE] optimize sortshuffle write URL: https://github.com/apache/spark/pull/24127 ## What changes were proposed in this pull request? If the SortShuffleWriter.write method records is empty, it should be return directly and no need to keep runningļ¼refer to the process of BypassMergeSortShuffleWriter.write. Here are the benefits of create Instance ExternalSorter and tmp file. ## How was this patch tested? Existing tests
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