| /** |
| * 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 com.datatorrent.benchmark.cassandra; |
| |
| import org.apache.hadoop.conf.Configuration; |
| |
| import com.datatorrent.api.DAG; |
| import com.datatorrent.api.DAG.Locality; |
| import com.datatorrent.api.StreamingApplication; |
| |
| import com.datatorrent.api.annotation.ApplicationAnnotation; |
| |
| import com.datatorrent.contrib.cassandra.CassandraTransactionalStore; |
| |
| import com.datatorrent.lib.testbench.RandomEventGenerator; |
| |
| /** |
| * Application to benchmark the performance of cassandra output operator. |
| * The operator was tested on following configuration: |
| * Virtual Box with 10GB ram, 4 processor cores on an i7 machine with 16GB ram |
| * The number of tuples processed per second were around 20,000 |
| * |
| * @since 1.0.3 |
| */ |
| |
| @ApplicationAnnotation(name = "CassandraOperatorDemo") |
| public class CassandraOutputBenchmarkApplication implements StreamingApplication |
| { |
| private final Locality locality = null; |
| |
| @Override |
| public void populateDAG(DAG dag, Configuration conf) |
| { |
| int maxValue = 1000; |
| |
| RandomEventGenerator rand = dag.addOperator("rand", new RandomEventGenerator()); |
| rand.setMinvalue(0); |
| rand.setMaxvalue(maxValue); |
| rand.setTuplesBlast(200); |
| |
| CassandraOutputOperator cassandra = dag.addOperator("cassandra", new CassandraOutputOperator()); |
| CassandraTransactionalStore store = new CassandraTransactionalStore(); |
| store.setKeyspace("test"); |
| store.setNode("127.0.0.1"); |
| cassandra.setStore(store); |
| |
| dag.addStream("rand_cassandra", rand.integer_data, cassandra.input).setLocality(locality); |
| } |
| |
| } |