网站介绍：文章浏览阅读667次。Spark-ShuffleShuffle概述ShuffleHashShuffle机制HashShuffle概述未优化的HashShuffle机制优化的HashShuffle机制Sort-Based ShuffleSort-Based Shuffle概述Shuffle概述 在MapReduce和Spark中都有Shuffle。对于MapReduce框架，Shuffle是连接Map和Reduce..._shuffleblockfetcheriterator 写mysql 耗时
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