| /** |
| * 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.yarn.api.records.timelineservice; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.hadoop.yarn.api.records.timelineservice.TimelineMetric.Type; |
| |
| import org.junit.Test; |
| |
| /** |
| * Tests {@link TimelineMetric} operations such as aggregation. |
| */ |
| public class TestTimelineMetric { |
| |
| @Test |
| public void testTimelineMetricAggregation() { |
| long ts = System.currentTimeMillis(); |
| // single_value metric add against null metric |
| TimelineMetric m1 = getSingleValueMetric("MEGA_BYTES_MILLIS", |
| TimelineMetricOperation.SUM, ts, 10000L); |
| TimelineMetric aggregatedMetric = TimelineMetric.aggregateTo(m1, null); |
| assertEquals(10000L, aggregatedMetric.getSingleDataValue()); |
| |
| TimelineMetric m2 = getSingleValueMetric("MEGA_BYTES_MILLIS", |
| TimelineMetricOperation.SUM, ts, 20000L); |
| aggregatedMetric = TimelineMetric.aggregateTo(m2, aggregatedMetric); |
| assertEquals(30000L, aggregatedMetric.getSingleDataValue()); |
| |
| // stateful sum test |
| Map<Object, Object> state = new HashMap<>(); |
| state.put(TimelineMetricOperation.PREV_METRIC_STATE_KEY, m2); |
| TimelineMetric m2New = getSingleValueMetric("MEGA_BYTES_MILLIS", |
| TimelineMetricOperation.SUM, ts, 10000L); |
| aggregatedMetric = TimelineMetric.aggregateTo(m2New, aggregatedMetric, |
| state); |
| assertEquals(20000L, aggregatedMetric.getSingleDataValue()); |
| |
| // single_value metric max against single_value metric |
| TimelineMetric m3 = getSingleValueMetric("TRANSFER_RATE", |
| TimelineMetricOperation.MAX, ts, 150L); |
| TimelineMetric aggregatedMax = TimelineMetric.aggregateTo(m3, null); |
| assertEquals(150L, aggregatedMax.getSingleDataValue()); |
| |
| TimelineMetric m4 = getSingleValueMetric("TRANSFER_RATE", |
| TimelineMetricOperation.MAX, ts, 170L); |
| aggregatedMax = TimelineMetric.aggregateTo(m4, aggregatedMax); |
| assertEquals(170L, aggregatedMax.getSingleDataValue()); |
| |
| // single_value metric avg against single_value metric |
| TimelineMetric m5 = getSingleValueMetric("TRANSFER_RATE", |
| TimelineMetricOperation.AVG, ts, 150L); |
| try { |
| TimelineMetric.aggregateTo(m5, null); |
| fail("Taking average among metrics is not supported! "); |
| } catch (UnsupportedOperationException e) { |
| // Expected |
| } |
| |
| } |
| |
| private static TimelineMetric getSingleValueMetric(String id, |
| TimelineMetricOperation op, long timestamp, long value) { |
| TimelineMetric m = new TimelineMetric(); |
| m.setId(id); |
| m.setType(Type.SINGLE_VALUE); |
| m.setRealtimeAggregationOp(op); |
| Map<Long, Number> metricValues = new HashMap<Long, Number>(); |
| metricValues.put(timestamp, value); |
| m.setValues(metricValues); |
| return m; |
| } |
| } |