| /** |
| * 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.tracing; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.net.URI; |
| import java.util.LinkedList; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.LocalFileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.tracing.SpanReceiverInfo.ConfigurationPair; |
| import org.apache.htrace.core.HTraceConfiguration; |
| import org.junit.Test; |
| |
| public class TestTraceUtils { |
| private static String TEST_PREFIX = "test.prefix.htrace."; |
| |
| @Test |
| public void testWrappedHadoopConf() { |
| String key = "sampler"; |
| String value = "ProbabilitySampler"; |
| Configuration conf = new Configuration(); |
| conf.set(TEST_PREFIX + key, value); |
| HTraceConfiguration wrapped = TraceUtils.wrapHadoopConf(TEST_PREFIX, conf); |
| assertEquals(value, wrapped.get(key)); |
| } |
| |
| @Test |
| public void testExtraConfig() { |
| String key = "test.extra.config"; |
| String oldValue = "old value"; |
| String newValue = "new value"; |
| Configuration conf = new Configuration(); |
| conf.set(TEST_PREFIX + key, oldValue); |
| LinkedList<ConfigurationPair> extraConfig = |
| new LinkedList<ConfigurationPair>(); |
| extraConfig.add(new ConfigurationPair(TEST_PREFIX + key, newValue)); |
| HTraceConfiguration wrapped = TraceUtils.wrapHadoopConf(TEST_PREFIX, conf, extraConfig); |
| assertEquals(newValue, wrapped.get(key)); |
| } |
| |
| /** |
| * Test tracing the globber. This is a regression test for HDFS-9187. |
| */ |
| @Test |
| public void testTracingGlobber() throws Exception { |
| // Bypass the normal FileSystem object creation path by just creating an |
| // instance of a subclass. |
| FileSystem fs = new LocalFileSystem(); |
| fs.initialize(new URI("file:///"), new Configuration()); |
| fs.globStatus(new Path("/")); |
| fs.close(); |
| } |
| } |