flink 運維 調優

service level agreement

int[] groupKeys = new int[]{0,2,3};
DataStream resStream =  demoStream.keyBy(groupKeys)
            .flatMap(new MyFlatmapFunction())
            .keyBy(groupKeys)
            .process(new MyProcessFunction())
            .keyBy(groupKeys)
            .timeWindow(Time.seconds(1))
            .aggregate(new MyAggFunction())
            .keyBy(groupKeys)
            .timeWindow(Time.seconds(1))
            .process(new MyKeyProcessFunction());

int[] groupKeys = new int[]{0,2,3};
DataStream proStream = DataStreamUtils.reinterpretAsKeyedStream(demoStream, new MyKeySelector2(groupKeys) )  //  MyKeySelector2 自己實現keySelector
            .flatMap(new MyFlatmapFunction());