/**
* 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 org.junit.Test;
import static org.junit.Assert.*;
public class TestTaskPerformanceSplits {
@Test
public void testPeriodStatsets() {
PeriodicStatsAccumulator cumulative = new CumulativePeriodicStats(8);
PeriodicStatsAccumulator status = new StatePeriodicStats(8);
cumulative.extend(0.0D, 0);
cumulative.extend(0.4375D, 700); // 200 per octant
cumulative.extend(0.5625D, 1100); // 0.5 = 900
cumulative.extend(0.625D, 1300);
cumulative.extend(1.0D, 7901);
int total = 0;
int[] results = cumulative.getValues();
for (int i = 0; i < 8; ++i) {
System.err.println("segment i = " + results[i]);
}
assertEquals("Bad interpolation in cumulative segment 0", 200, results[0]);
assertEquals("Bad interpolation in cumulative segment 1", 200, results[1]);
assertEquals("Bad interpolation in cumulative segment 2", 200, results[2]);
assertEquals("Bad interpolation in cumulative segment 3", 300, results[3]);
assertEquals("Bad interpolation in cumulative segment 4", 400, results[4]);
assertEquals("Bad interpolation in cumulative segment 5", 2200, results[5]);
// these are rounded down
assertEquals("Bad interpolation in cumulative segment 6", 2200, results[6]);
assertEquals("Bad interpolation in cumulative segment 7", 2201, results[7]);
status.extend(0.0D, 0);
status.extend(1.0D/16.0D, 300); // + 75 for bucket 0
status.extend(3.0D/16.0D, 700); // + 200 for 0, +300 for 1
status.extend(7.0D/16.0D, 2300); // + 450 for 1, + 1500 for 2, + 1050 for 3
status.extend(1.0D, 1400); // +1125 for 3, +2100 for 4, +1900 for 5,
; // +1700 for 6, +1500 for 7
results = status.getValues();
assertEquals("Bad interpolation in status segment 0", 275, results[0]);
assertEquals("Bad interpolation in status segment 1", 750, results[1]);
assertEquals("Bad interpolation in status segment 2", 1500, results[2]);
assertEquals("Bad interpolation in status segment 3", 2175, results[3]);
assertEquals("Bad interpolation in status segment 4", 2100, results[4]);
assertEquals("Bad interpolation in status segment 5", 1900, results[5]);
assertEquals("Bad interpolation in status segment 6", 1700, results[6]);
assertEquals("Bad interpolation in status segment 7", 1500, results[7]);
}
}