Apache Flink仪表板未显示指标

问题描述 投票:2回答:1

我有以下非常简单的Apache Flink管道,我想通过Apache Flink仪表板获取一些指标,如Apache Flink documentation中所述:

import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.metrics.Counter;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.source.RichSourceFunction;

public class Pipeline {

    public static void main(String[] args) throws Exception {
        final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

        env.addSource(new RichSourceFunction<String>() {
            private static final long serialVersionUID = 3990963645875188158L;
            private boolean notCanceled = true;

            @Override
            public void run(SourceContext<String> ctx) throws Exception {
                while (notCanceled) {
                    ctx.collect("test");
                }
            }

            @Override
            public void cancel() {
                notCanceled = false;
            }
        }).map(new RichMapFunction<String, String>() {
            private static final long serialVersionUID = 1L;
            private transient Counter counter;

            @Override
            public void open(Configuration parameters) throws Exception {
                super.open(parameters);
                this.counter = getRuntimeContext()
                        .getMetricGroup()
                        .counter("myCounter");
            }

            @Override
            public String map(String value) throws Exception {
                this.counter.inc();
                return "mappedtext";
            }
        }).print();

        env.execute();
    }

}

我确实使用可通过Docker-Hub使用的Docker设置运行该管道。一切都使用Apache Flink 1.10.0。管道运行正常,但是当我尝试查看指标时,只会得到:Metric is not showing

现在我问自己我在做什么错?是否缺少一些配置参数,或者这不是在仪表板中查看该指标的正确位置?有人可以建议或至少指向我提供更多信息的资源吗?

java apache-flink flink-streaming
1个回答
0
投票
要检查您添加的该指标,可以使用REST API或任何指标报告器。我认为,如果您通过[]禁用操作员链接,它也可能会显示在Web UI中

env.disableOperatorChaining();

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