Flink 流转表，表转流，watermark设置

流转表

首先创建一个流

@Data
@AllArgsConstructor
@NoArgsConstructor
public static class Nan {
    private String xing;
    private String name;
    private Long ts;
}


StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
env.setParallelism(1);
StreamTableEnvironment tenv = StreamTableEnvironment.create(env);

DataStreamSource<String> sourceNan = env.socketTextStream("hdp01", 1111);
DataStreamSource<String> sourceNv = env.socketTextStream("hdp01", 2222);

System.setProperty("java.net.preferIPv4Stack", "true");

SingleOutputStreamOperator<Nan> beanNan = sourceNan.map(new MapFunction<String, Nan>() {
    @Override
    public Nan map(String s) throws Exception {
        try {
            String[] split = s.split(",");
            return new Nan(split[0].substring(0, 1), split[1], Long.parseLong(split[2]