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TestAdditionalTasks.java
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TestAdditionalTasks.java
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/**
* 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.hama.bsp;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hama.Constants;
import org.apache.hama.HamaCluster;
import org.apache.hama.HamaConfiguration;
import org.apache.hama.bsp.sync.SyncException;
import org.apache.hama.commons.util.KeyValuePair;
public class TestAdditionalTasks extends HamaCluster {
public static final Log LOG = LogFactory.getLog(TestAdditionalTasks.class);
protected HamaConfiguration configuration;
// these variables are preventing from rebooting the whole stuff again since
// setup and teardown are called per method.
public TestAdditionalTasks() {
configuration = new HamaConfiguration();
configuration.set("bsp.master.address", "localhost");
configuration.set("hama.child.redirect.log.console", "true");
assertEquals("Make sure master addr is set to localhost:", "localhost",
configuration.get("bsp.master.address"));
configuration.set("bsp.local.dir", "/tmp/hama-test");
configuration.set(Constants.ZOOKEEPER_QUORUM, "localhost");
configuration.setInt(Constants.ZOOKEEPER_CLIENT_PORT, 21810);
configuration.set("hama.sync.peer.class",
org.apache.hama.bsp.sync.ZooKeeperSyncClientImpl.class
.getCanonicalName());
}
@Override
public void setUp() throws Exception {
super.setUp();
}
@Override
public void tearDown() throws Exception {
super.tearDown();
}
public void testAdditionalTasks() throws Exception {
Configuration conf = new Configuration();
BSPJob bsp = new BSPJob(new HamaConfiguration(conf));
bsp.setBspClass(TestBSP.class);
conf.setInt(Constants.ZOOKEEPER_SESSION_TIMEOUT, 600);
bsp.setInputFormat(TextInputFormat.class);
bsp.setOutputFormat(NullOutputFormat.class);
bsp.setInputPath(new Path("../CHANGES.txt"));
bsp.getConfiguration().setInt(Constants.ADDITIONAL_BSP_TASKS, 1);
bsp.setNumBspTask(2);
assertTrue(bsp.waitForCompletion(true));
Counters counter = bsp.getCounters();
assertTrue(2 == counter.getCounter(JobInProgress.JobCounter.LAUNCHED_TASKS));
}
public static class TestBSP extends
BSP<LongWritable, Text, NullWritable, NullWritable, NullWritable> {
@Override
public void bsp(
BSPPeer<LongWritable, Text, NullWritable, NullWritable, NullWritable> peer)
throws IOException, SyncException, InterruptedException {
long numOfPairs = 0;
KeyValuePair<LongWritable, Text> readNext = null;
while ((readNext = peer.readNext()) != null) {
LOG.debug(readNext.getKey().get() + " / "
+ readNext.getValue().toString());
numOfPairs++;
}
assertTrue(numOfPairs > 2 || numOfPairs == 0);
}
}
}