kamaci commented on a change in pull request #175: GORA-546 Hazelcast Jet execution engine support URL: https://github.com/apache/gora/pull/175#discussion_r310402575
########## File path: gora-jet/src/main/java/org/apache/gora/jet/JetSink.java ########## @@ -0,0 +1,90 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.gora.jet; + +import com.hazelcast.jet.core.AbstractProcessor; +import com.hazelcast.jet.core.ProcessorMetaSupplier; +import com.hazelcast.jet.core.ProcessorSupplier; +import com.hazelcast.nio.Address; +import org.apache.gora.persistency.impl.PersistentBase; +import org.apache.gora.util.GoraException; + +import javax.annotation.Nonnull; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.function.Function; + +import static java.util.stream.Collectors.toList; +import static java.util.stream.IntStream.range; + +/** + * jet-sink implementation. + */ +public class JetSink<KeyOut, ValueOut extends PersistentBase> implements ProcessorMetaSupplier { + + private transient int localParallelism; + + @Override + public void init(@Nonnull Context context) { + localParallelism = context.localParallelism(); + } + + @Nonnull + @Override + public Function<? super Address, ? extends ProcessorSupplier> get(@Nonnull List<Address> addresses) { + Map<Address, ProcessorSupplier> map = new HashMap<>(); + for (int i = 0; i < addresses.size(); i++) { + //globalIndexBase is the first processor index in a certain Jet-Cluster member + int globalIndexBase = localParallelism * i; + + // processorCount will be equal to localParallelism: + ProcessorSupplier supplier = processorCount -> + range(globalIndexBase, globalIndexBase + processorCount) + .mapToObj(globalIndex -> + new SinkProcessor<KeyOut, ValueOut>() + ).collect(toList()); + map.put(addresses.get(i), supplier); + } + return map::get; + } +} + +class SinkProcessor<KeyOut, ValueOut extends PersistentBase> extends AbstractProcessor { + + @Override + public boolean isCooperative() { + return false; + } + + @Override + protected boolean tryProcess(int ordinal, Object item) throws Exception { Review comment: You can put: @SuppressWarnings("unchecked") ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
