hadoop WorkAssignmentProtocol 源码
haddop WorkAssignmentProtocol 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-mawo/hadoop-yarn-applications-mawo-core/src/main/java/org/apache/hadoop/applications/mawo/server/common/WorkAssignmentProtocol.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.hadoop.applications.mawo.server.common;
import org.apache.hadoop.applications.mawo.server.worker.WorkerId;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.ipc.ProtocolInfo;
/**
* Define work assignment protocol.
*/
@ProtocolInfo(protocolName = "WorkAssignmentProtocol", protocolVersion = 1)
public interface WorkAssignmentProtocol {
/**
* Get next workerId to which new task will be assigned.
* @return return workerId text
*/
Text getNewWorkerId();
/**
* Register Worker.
* When worker will be launched first, it needs to be registered with Master.
* @param workerId : Worker Id
* @return Task instance
*/
Task registerWorker(WorkerId workerId);
/**
* De Register worker.
* When worker is de-registered, no new task will be assigned to this worker.
* @param workerId : Worker identifier
*/
void deRegisterWorker(WorkerId workerId);
/**
* Worker sends heartbeat to Master.
* @param workerId : Worker Id
* @param taskStatusList : TaskStatus list of all tasks assigned to worker.
* @return Task instance
*/
Task sendHeartbeat(WorkerId workerId, TaskStatus[] taskStatusList);
/**
* Add Task to the list.
* @param task : Task object
*/
void addTask(Task task);
}
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