modules/core/src/main/java/org/apache/ignite/compute/ComputeTaskMapAsync.java

/*
 * 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.ignite.compute;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.List;

/**
 * Annotation for asynchronous task mapping.
 * <p>
 * This annotation enables map step ({@link ComputeTask#map(List, Object)}) for task
 * to be performed asynchronously when attached to {@link ComputeTask} class being executed.
 * <p>
 * Use this annotation when tasks spawns large amount of jobs or map step takes a long time
 * and it is better to perform it in Ignite system thread.
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.TYPE})
public @interface ComputeTaskMapAsync {
    // No-op.
}