/* * 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.kylin.engine.spark.util; import org.apache.kylin.measure.percentile.PercentileCounter; import org.junit.Assert; import org.junit.Test; import com.esotericsoftware.kryo.Kryo; import com.esotericsoftware.kryo.io.Input; import com.esotericsoftware.kryo.io.Output; public class PercentileSerializerTest { @Test public void testSerialization() { Kryo kryo = new Kryo(); kryo.register(PercentileCounter.class, new PercentileCounterSerializer()); double compression = 100; double quantile = 0.8; PercentileCounter origin_counter = new PercentileCounter(compression, quantile); for (int i = 1; i < 10; i++) { origin_counter.add(i); } byte[] buffer = serialize(kryo, origin_counter); PercentileCounter deserialized_counter = deserialize(kryo, buffer, PercentileCounter.class); Assert.assertEquals("Compression Error", origin_counter.getCompression(), deserialized_counter.getCompression(), 0.00000001); Assert.assertEquals("QuantileRatio Error", origin_counter.getQuantileRatio(), deserialized_counter.getQuantileRatio(), 0.00000001); Assert.assertEquals("Estimation Error", origin_counter.getResultEstimate(), deserialized_counter.getResultEstimate(), 0.00000001); } public static <T> T deserialize(final Kryo kryo, final byte[] in, final Class<T> clazz) { final Input input = new Input(in); return kryo.readObject(input, clazz); } public static byte[] serialize(final Kryo kryo, final Object o) { if (o == null) { throw new NullPointerException("Can't serialize null"); } final Output output = new Output(4096); kryo.writeObject(output, o); output.flush(); return output.getBuffer(); } }