网站介绍:文章浏览阅读113次。文章目录5.3 DateSet 的Transformation5.3.1 map 函数5.3.2 flatMap 函数5.3.3 mapPartition 函数5.3.4 filter 函数5.3.5 reduce 函数5.3.6 reduceGroup5.3.7 Aggregate5.3.8 minBy 和maxBy5.3.9 distinct 去重5.3.10 Join5.3.11 Union5.3.12 Rebalance5.3.13 分区5.3.13.1 partitionByHash5.3.13._flink keys.expressionkeys
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