Question

不确定是否有Ignite提供的java.util.concurrent.CompletionService实现，如Infinispan（org.infinispan.distexec.DistributedExecutionCompletionService），

编辑：

以下是示例代码，如果以分布式模式启动（在三个终端中）

，则无效

public void run(boolean isMaster, final String nodeName) throws Exception {

    IgniteConfiguration cfg = new IgniteConfiguration();
    cfg.setGridName(nodeName); 

    Ignite ignite = Ignition.start(cfg); 

    if (isMaster) {
        CompletionService<String> service =  new ExecutorCompletionService<String>(ignite.executorService());
        for (int i = 0; i < 10; i++) {
            service.submit(new Callable<String>() {

                @Override
                public String call() throws Exception {
                    System.out.println("Executing ");
                    return String.valueOf(new Random().nextInt(10));
                }
            });
        }

        for (int i = 0; i < 10; i++) {
            Future<String> f = service.take();
            System.out.println(f.get());
        }
    }
    System.out.println("Ctrl+D/Ctrl+Z to stop.");
}

第1号航站楼

mvn test-compile exec:java -Djava.net.preferIPv4Stack=true -Dexec.mainClass="com.github.dexecutor.ignite.Node" -Dexec.classpathScope="test" -Dexec.args="s node-A"

输出

[22:29:59] Topology snapshot [ver=3, servers=3, clients=0, CPUs=4, heap=5.3GB]
Executing
Executing
Executing

Termincal＃2

mvn test-compile exec:java -Djava.net.preferIPv4Stack=true -Dexec.mainClass="com.github.dexecutor.ignite.Node" -Dexec.classpathScope="test" -Dexec.args="s node-B"

输出

[22:29:59] Topology snapshot [ver=3, servers=3, clients=0, CPUs=4, heap=5.3GB]
Executing
Executing
Executing

终端＃3：主人

mvn test-compile exec:java  -Dexec.classpathScope="test" -Djava.net.preferIPv4Stack=true -Dexec.mainClass="com.github.dexecutor.ignite.Node" -Dexec.args="m node-C"

输出

[22:29:59] Topology snapshot [ver=3, servers=3, clients=0, CPUs=4,      heap=5.3GB]
Executing 
Executing 
6
2
Executing 
4
Executing 
3

它应该打印6个随机整数，但它永远阻止

这是whole project遵循Node类

中的指令

注意：我能够使用＆＃39; igniteCompute.call＆＃39;来获得CompletionService的功能。和＆＃39; igniteCompute.future（）。listen（newListener（））;＆＃39;，但我不认为这是有效的。请参阅example

Answer 1

Ignite提供ExecutorService的实现，因此您可以使用JDK中包含的ExecutorCompletionService。

CompletionService<Object> service =
    new ExecutorCompletionService<>(ignite.executorService());

Ignite java.util.concurrent.CompletionService实现

1 个答案: