在 hazelcast Jet 中处理我的 DAG 时,我偶然发现了一个奇怪的问题。为了检查错误,我完全简化了我的方法,并且:根据教程,边缘似乎不起作用。
下面的代码几乎和它一样简单。两个顶点(一个源,一个汇),一个边。
源是从地图读取,接收器应该放入地图。
data.addEntryListener 正确地告诉我地图由另一个应用程序填充了 100 个列表(每个列表有 400 个字节的 25 个对象)......然后什么也没有。地图填满了,但 dag 根本不与之交互。
知道在哪里寻找问题吗?
package be.andersch.clusterbench;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.hazelcast.config.Config;
import com.hazelcast.config.SerializerConfig;
import com.hazelcast.core.EntryEvent;
import com.hazelcast.jet.*;
import com.hazelcast.jet.config.JetConfig;
import com.hazelcast.jet.stream.IStreamMap;
import com.hazelcast.map.listener.EntryAddedListener;
import be.andersch.anotherpackage.myObject;
import java.util.List;
import java.util.concurrent.ExecutionException;
import static com.hazelcast.jet.Edge.between;
import static com.hazelcast.jet.Processors.*;
/**
* Created by abernard on 24.03.2017.
*/
public class Analyzer {
private static final ObjectMapper mapper = new ObjectMapper();
private static JetInstance jet;
private static final IStreamMap<Long, List<String>> data;
private static final IStreamMap<Long, List<String>> testmap;
static {
JetConfig config = new JetConfig();
Config hazelConfig = config.getHazelcastConfig();
hazelConfig.getGroupConfig().setName( "name" ).setPassword( "password" );
hazelConfig.getNetworkConfig().getInterfaces().setEnabled( true ).addInterface( "my_IP_range_here" );
hazelConfig.getSerializationConfig().getSerializerConfigs().add(
new SerializerConfig().
setTypeClass(myObject.class).
setImplementation(new OsamKryoSerializer()));
jet = Jet.newJetInstance(config);
data = jet.getMap("data");
testmap = jet.getMap("testmap");
}
public static void main(String[] args) throws ExecutionException, InterruptedException {
DAG dag = new DAG();
Vertex source = dag.newVertex("source", readMap("data"));
Vertex test = dag.newVertex("test", writeMap("testmap"));
dag.edge(between(source, test));
jet.newJob(dag).execute()get();
data.addEntryListener((EntryAddedListener<Long, List<String>>) (EntryEvent<Long, List<String>> entryEvent) -> {
System.out.println("Got data: " + entryEvent.getKey() + " at " + System.currentTimeMillis() + ", Size: " + jet.getHazelcastInstance().getMap("data").size());
}, true);
testmap.addEntryListener((EntryAddedListener<Long, List<String>>) (EntryEvent<Long, List<String>> entryEvent) -> {
System.out.println("Got test: " + entryEvent.getKey() + " at " + System.currentTimeMillis());
}, true);
Runtime.getRuntime().addShutdownHook(new Thread(() -> Jet.shutdownAll()));
}
}