我需要按如下方式处理消息：
每个消息必须在所有进程中保持不变地传递。
如果进程检测到模式匹配，则必须将消息的副本传递给另一个线程。

streamIn -> process1 -> process2 -> .... -> processN
                 \         |                /
                  \        |               /
                     sink to kafka

我试过用outputtag

OutputTag<SysmonPartial> filtersOutput = new OutputTag<SysmonPartial>("FiltersOutput"){};

 DataStream<SysmonPartial> kafkaSource = env.addSource(consumer);

        DataStream<SysmonPartial> source = kafkaSource.rebalance();

        SingleOutputStreamOperator<SysmonPartial> s = source
                .process(lambda1).name("lambda1").startNewChain()
                .process(lambda2).name("lambda2").startNewChain()
                .process(lambda3).startNewChain()
                .process(lambda4).startNewChain()
                .process(lambda5).startNewChain()
                .process(lambda6).startNewChain()
                .process(lambda7).startNewChain();

        SingleOutputStreamOperator<Any> output = s
                .getSideOutput(filtersOutput)
                .process(filterProcessFunction).setParallelism(1).startNewChain();

        output.addSink(sink).setParallelism(1);

        env.execute(jobName);

其中lambda 1、2等是条件检查函数，例如

public class Bypass_WS_01_03 extends FilterTagFuction<SysmonPartial, SysmonPartial, SysmonPartial> {
    private static final Pattern p_1 = Pattern.compile("pattern1");
    private static final Pattern p_0 = Pattern.compile("pattern2");

    @Override
    public void processElement(SysmonPartial t, Context ctx, Collector<SysmonPartial> out) throws Exception {
        out.collect(t);
        if (
                "1".equals(t.B_VendorEventID) &&
                        t.CommandLine != null && t.CommandLine.length() != 0 && p_0.matcher(t.CommandLine).find() &&
                        t.ImageName != null && t.ImageName.length() != 0 && p_1.matcher(t.ImageName).find()
        ) {
            t.RuleId = "Bypass_WS_01_03";
            ctx.output(getOutputTag(), t);
        }
    }
}

但出于某种原因，它对我不起作用，也许还有其他方法？我从文件中了解到(https://ci.apache.org/projects/flink/flink-docs-stable/dev/stream/side_output.html)，outputtag用于创建标记为tag的其他消息。还是我错了？