/**
* 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.mapred;
import java.util.Map;
import org.apache.hadoop.mapred.StatisticsCollector.TimeWindow;
import org.apache.hadoop.mapred.StatisticsCollector.Stat;
import org.junit.Test;
import static org.junit.Assert.*;
public class TestStatisticsCollector {
@SuppressWarnings("rawtypes")
@Test (timeout =20000)
public void testMovingWindow() throws Exception {
StatisticsCollector collector = new StatisticsCollector(1);
TimeWindow window = new TimeWindow("test", 6, 2);
TimeWindow sincStart = StatisticsCollector.SINCE_START;
TimeWindow[] windows = {sincStart, window};
Stat stat = collector.createStat("m1", windows);
stat.inc(3);
collector.update();
assertEquals(0, stat.getValues().get(window).getValue());
assertEquals(3, stat.getValues().get(sincStart).getValue());
stat.inc(3);
collector.update();
assertEquals((3+3), stat.getValues().get(window).getValue());
assertEquals(6, stat.getValues().get(sincStart).getValue());
stat.inc(10);
collector.update();
assertEquals((3+3), stat.getValues().get(window).getValue());
assertEquals(16, stat.getValues().get(sincStart).getValue());
stat.inc(10);
collector.update();
assertEquals((3+3+10+10), stat.getValues().get(window).getValue());
assertEquals(26, stat.getValues().get(sincStart).getValue());
stat.inc(10);
collector.update();
stat.inc(10);
collector.update();
assertEquals((3+3+10+10+10+10), stat.getValues().get(window).getValue());
assertEquals(46, stat.getValues().get(sincStart).getValue());
stat.inc(10);
collector.update();
assertEquals((3+3+10+10+10+10), stat.getValues().get(window).getValue());
assertEquals(56, stat.getValues().get(sincStart).getValue());
stat.inc(12);
collector.update();
assertEquals((10+10+10+10+10+12), stat.getValues().get(window).getValue());
assertEquals(68, stat.getValues().get(sincStart).getValue());
stat.inc(13);
collector.update();
assertEquals((10+10+10+10+10+12), stat.getValues().get(window).getValue());
assertEquals(81, stat.getValues().get(sincStart).getValue());
stat.inc(14);
collector.update();
assertEquals((10+10+10+12+13+14), stat.getValues().get(window).getValue());
assertEquals(95, stat.getValues().get(sincStart).getValue());
// test Stat class
Map updaters= collector.getUpdaters();
assertEquals(updaters.size(),2);
Map<String, Stat> ststistics=collector.getStatistics();
assertNotNull(ststistics.get("m1"));
Stat newStat= collector.createStat("m2");
assertEquals(newStat.name, "m2");
Stat st=collector.removeStat("m1");
assertEquals(st.name, "m1");
assertEquals((10+10+10+12+13+14), stat.getValues().get(window).getValue());
assertEquals(95, stat.getValues().get(sincStart).getValue());
st=collector.removeStat("m1");
// try to remove stat again
assertNull(st);
collector.start();
// waiting 2,5 sec
Thread.sleep(2500);
assertEquals(69, stat.getValues().get(window).getValue());
assertEquals(95, stat.getValues().get(sincStart).getValue());
}
}