一旦喷口完成就杀死Storm拓扑

Question

我创建了一个带有Spout的Storm拓扑，该Spout会发出许多元组用于基准测试。一旦所有的元组都从spout发出或者拓扑中不再有任何元组流动，我就想停止/终止我的拓扑。

LocalCluster cluster = new LocalCluster();
TopologyBuilder builder = new TopologyBuilder();
Config conf = new Config();
//Disabled ACK'ing for higher throughput
conf.put(Config.TOPOLOGY_ACKER_EXECUTORS, 0); 

LoadGeneratorSource loadGenerator = new LoadGeneratorSource(runtime,numberOfTuplesToBeEmitted);
builder.setSpout("loadGenerator", loadGenerator);

//Some Bolts Here

while (loadGenerator.isRunning()){
//Active Waiting
}
//DO SOME STUFF WITH JAVA
cluster.killTopology("StormBenchmarkTopology");

public class LoadGeneratorSource extends BaseRichSpout {

    private final int throughput;
    private boolean running;
    private final long runtime;


    public LoadGeneratorSource(long runtime,int throughput) {
        this.throughput = throughput;
        this.runtime = runtime;
    }

    @Override
    public void nextTuple() {
        ThroughputStatistics.getInstance().pause(false);

        long endTime = System.currentTimeMillis() + runtime;
        while (running) {
            long startTs = System.currentTimeMillis();

            for (int i = 0; i < throughput; i++) {
                try {
                    emitValue(readNextTuple());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            while (System.currentTimeMillis() < startTs + 1000) {
                // active waiting
            }

            if (endTime <= System.currentTimeMillis())
                setRunning(false);
        }
    }

    public boolean isRunning() {
        return running;
    }

    public void setRunning(boolean running) {
        this.running = running;
    }

    //MORE STUFF

}

Answer 1

这看起来像是从喷口杀死Storm拓扑的复制品。请试一下那里给出的答案。

只是为了给出一个快速的总结；您尝试这样做的方法是行不通的，但是您可以使用来自spout的NimbusClient请求Nimbus终止您的拓扑。附带的好处是，一旦您部署到一个真正的集群，这也将起作用。