/**
* 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.tez.test.dag;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.tez.common.TezUtils;
import org.apache.tez.dag.api.DAG;
import org.apache.tez.dag.api.Edge;
import org.apache.tez.dag.api.EdgeProperty;
import org.apache.tez.dag.api.UserPayload;
import org.apache.tez.dag.api.Vertex;
import org.apache.tez.dag.api.EdgeProperty.DataMovementType;
import org.apache.tez.dag.api.EdgeProperty.DataSourceType;
import org.apache.tez.dag.api.EdgeProperty.SchedulingType;
import org.apache.tez.test.TestInput;
import org.apache.tez.test.TestOutput;
import org.apache.tez.test.TestProcessor;
/**
* A DAG with 3 vertices of which their graph can be depicted easily with V shape.
* v1 v2
* \ /
* v3
*
*/
public class SimpleVTestDAG {
static Resource defaultResource = Resource.newInstance(100, 0);
public static String TEZ_SIMPLE_V_DAG_NUM_TASKS =
"tez.simple-v-test-dag.num-tasks";
public static int TEZ_SIMPLE_V_DAG_NUM_TASKS_DEFAULT = 2;
public static DAG createDAG(String name,
Configuration conf) throws Exception {
UserPayload payload = UserPayload.create(null);
int taskCount = TEZ_SIMPLE_V_DAG_NUM_TASKS_DEFAULT;
if (conf != null) {
taskCount = conf.getInt(TEZ_SIMPLE_V_DAG_NUM_TASKS, TEZ_SIMPLE_V_DAG_NUM_TASKS_DEFAULT);
payload = TezUtils.createUserPayloadFromConf(conf);
}
DAG dag = DAG.create(name);
Vertex v1 = Vertex.create("v1", TestProcessor.getProcDesc(payload), taskCount, defaultResource);
Vertex v2 = Vertex.create("v2", TestProcessor.getProcDesc(payload), taskCount, defaultResource);
Vertex v3 = Vertex.create("v3", TestProcessor.getProcDesc(payload), taskCount, defaultResource);
dag.addVertex(v1).addVertex(v2).addVertex(v3);
dag.addEdge(Edge.create(v1, v3,
EdgeProperty.create(DataMovementType.SCATTER_GATHER,
DataSourceType.PERSISTED,
SchedulingType.SEQUENTIAL,
TestOutput.getOutputDesc(payload),
TestInput.getInputDesc(payload))));
dag.addEdge(Edge.create(v2, v3,
EdgeProperty.create(DataMovementType.SCATTER_GATHER,
DataSourceType.PERSISTED,
SchedulingType.SEQUENTIAL,
TestOutput.getOutputDesc(payload),
TestInput.getInputDesc(payload))));
return dag;
}
public static DAG createDAG(Configuration conf) throws Exception {
return createDAG("SimpleVTestDAG", conf);
}
}