| /** |
| * Copyright 2012 Twitter, Inc. |
| * |
| * Licensed 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 parquet.hadoop.codec; |
| |
| import org.junit.Assert; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapreduce.*; |
| import org.junit.Test; |
| import parquet.hadoop.ParquetOutputFormat; |
| import parquet.hadoop.metadata.CompressionCodecName; |
| |
| import java.io.IOException; |
| import parquet.hadoop.util.ContextUtil; |
| |
| public class CodecConfigTest { |
| @Test |
| public void testReadingCodecs() throws IOException { |
| shouldUseParquetFlagToSetCodec("gzip", CompressionCodecName.GZIP); |
| shouldUseHadoopFlagToSetCodec(CompressionCodecName.GZIP.getHadoopCompressionCodecClassName(), CompressionCodecName.GZIP); |
| shouldUseParquetFlagToSetCodec("snappy", CompressionCodecName.SNAPPY); |
| shouldUseHadoopFlagToSetCodec(CompressionCodecName.SNAPPY.getHadoopCompressionCodecClassName(), CompressionCodecName.SNAPPY); |
| //When codec is unrecognized, use uncompressed |
| shouldUseHadoopFlagToSetCodec("unexistedCodec", CompressionCodecName.UNCOMPRESSED); |
| //For unsupported codec, use uncompressed |
| shouldUseHadoopFlagToSetCodec("org.apache.hadoop.io.compress.DefaultCodec", CompressionCodecName.UNCOMPRESSED); |
| } |
| |
| public void shouldUseParquetFlagToSetCodec(String codecNameStr, CompressionCodecName expectedCodec) throws IOException { |
| |
| //Test mapreduce API |
| Job job = new Job(); |
| Configuration conf = job.getConfiguration(); |
| conf.set(ParquetOutputFormat.COMPRESSION, codecNameStr); |
| TaskAttemptContext task = ContextUtil.newTaskAttemptContext(conf, new TaskAttemptID(new TaskID(new JobID("test", 1), false, 1), 1)); |
| Assert.assertEquals(CodecConfig.from(task).getCodec(), expectedCodec); |
| |
| //Test mapred API |
| JobConf jobConf = new JobConf(); |
| jobConf.set(ParquetOutputFormat.COMPRESSION, codecNameStr); |
| Assert.assertEquals(CodecConfig.from(jobConf).getCodec(), expectedCodec); |
| } |
| |
| public void shouldUseHadoopFlagToSetCodec(String codecClassStr, CompressionCodecName expectedCodec) throws IOException { |
| //Test mapreduce API |
| Job job = new Job(); |
| Configuration conf = job.getConfiguration(); |
| conf.setBoolean("mapred.output.compress", true); |
| conf.set("mapred.output.compression.codec", codecClassStr); |
| TaskAttemptContext task = ContextUtil.newTaskAttemptContext(conf, new TaskAttemptID(new TaskID(new JobID("test", 1), false, 1), 1)); |
| Assert.assertEquals(expectedCodec, CodecConfig.from(task).getCodec()); |
| |
| //Test mapred API |
| JobConf jobConf = new JobConf(); |
| jobConf.setBoolean("mapred.output.compress", true); |
| jobConf.set("mapred.output.compression.codec", codecClassStr); |
| Assert.assertEquals(CodecConfig.from(jobConf).getCodec(), expectedCodec); |
| } |
| |
| |
| } |