| /** |
| * 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.io.erasurecode.coder; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| import org.apache.hadoop.io.erasurecode.rawcoder.RSRawErasureCoderFactory; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| /** |
| * Test Reed-Solomon encoding and decoding. |
| */ |
| public class TestRSErasureCoder extends TestErasureCoderBase { |
| |
| @Before |
| public void setup() { |
| this.encoderClass = RSErasureEncoder.class; |
| this.decoderClass = RSErasureDecoder.class; |
| |
| this.numDataUnits = 10; |
| this.numParityUnits = 1; |
| |
| this.numChunksInBlock = 10; |
| } |
| |
| @Test |
| public void testCodingNoDirectBuffer_10x4_erasing_d0_p0() { |
| prepare(null, 10, 4, new int[] {0}, new int[] {0}); |
| /** |
| * Doing twice to test if the coders can be repeatedly reused. This matters |
| * as the underlying coding buffers are shared, which may have bugs. |
| */ |
| testCoding(false); |
| testCoding(false); |
| } |
| |
| @Test |
| public void testCodingDirectBufferWithConf_10x4_erasing_d0() { |
| /** |
| * This tests if the configuration items work or not. |
| */ |
| Configuration conf = new Configuration(); |
| conf.set(CommonConfigurationKeys.IO_ERASURECODE_CODEC_RS_RAWCODER_KEY, |
| RSRawErasureCoderFactory.class.getCanonicalName()); |
| prepare(conf, 10, 4, new int[]{0}, new int[0]); |
| |
| testCoding(true); |
| testCoding(true); |
| } |
| |
| @Test |
| public void testCodingDirectBuffer_10x4_erasing_p1() { |
| prepare(null, 10, 4, new int[]{}, new int[]{1}); |
| testCoding(true); |
| testCoding(true); |
| } |
| |
| @Test |
| public void testCodingDirectBuffer_10x4_erasing_d2() { |
| prepare(null, 10, 4, new int[] {2}, new int[] {}); |
| testCoding(true); |
| testCoding(true); |
| } |
| |
| @Test |
| public void testCodingDirectBuffer_10x4_erasing_d0_p0() { |
| prepare(null, 10, 4, new int[] {0}, new int[] {0}); |
| testCoding(true); |
| testCoding(true); |
| } |
| |
| @Test |
| public void testCodingBothBuffers_10x4_erasing_d0_p0() { |
| prepare(null, 10, 4, new int[] {0}, new int[] {0}); |
| |
| /** |
| * Doing in mixed buffer usage model to test if the coders can be repeatedly |
| * reused with different buffer usage model. This matters as the underlying |
| * coding buffers are shared, which may have bugs. |
| */ |
| testCoding(true); |
| testCoding(false); |
| testCoding(true); |
| testCoding(false); |
| } |
| |
| @Test |
| public void testCodingDirectBuffer_10x4_erasure_of_d2_d4_p0() { |
| prepare(null, 10, 4, new int[] {2, 4}, new int[] {0}); |
| testCoding(true); |
| } |
| |
| @Test |
| public void testCodingDirectBuffer_10x4_erasing_d0_d1_p0_p1() { |
| prepare(null, 10, 4, new int[] {0, 1}, new int[] {0, 1}); |
| testCoding(true); |
| } |
| |
| @Test |
| public void testCodingNoDirectBuffer_3x3_erasing_d0_p0() { |
| prepare(null, 3, 3, new int[] {0}, new int[] {0}); |
| testCoding(false); |
| } |
| |
| @Test |
| public void testCodingDirectBuffer_3x3_erasing_d0_p0() { |
| prepare(null, 3, 3, new int[] {0}, new int[] {0}); |
| testCoding(true); |
| } |
| } |