| /** |
| * 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.fs; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.io.DataOutputBuffer; |
| |
| public class TestBlockLocation extends TestCase { |
| // Verify fix of bug identified in HADOOP-6004 |
| public void testDeserialization() throws IOException { |
| // Create a test BlockLocation |
| String[] names = {"one", "two" }; |
| String[] hosts = {"three", "four" }; |
| String[] topologyPaths = {"five", "six"}; |
| long offset = 25l; |
| long length = 55l; |
| |
| BlockLocation bl = new BlockLocation(names, hosts, topologyPaths, |
| offset, length); |
| |
| DataOutputBuffer dob = new DataOutputBuffer(); |
| |
| // Serialize it |
| try { |
| bl.write(dob); |
| } catch (IOException e) { |
| fail("Unable to serialize data: " + e.getMessage()); |
| } |
| |
| byte[] bytes = dob.getData(); |
| DataInput da = new DataInputStream(new ByteArrayInputStream(bytes)); |
| |
| // Try to re-create the BlockLocation the same way as is done during |
| // deserialization |
| BlockLocation bl2 = new BlockLocation(); |
| |
| try { |
| bl2.readFields(da); |
| } catch (IOException e) { |
| fail("Unable to deserialize BlockLocation: " + e.getMessage()); |
| } |
| |
| // Check that we got back what we started with |
| verifyDeserialization(bl2.getHosts(), hosts); |
| verifyDeserialization(bl2.getNames(), names); |
| verifyDeserialization(bl2.getTopologyPaths(), topologyPaths); |
| assertEquals(bl2.getOffset(), offset); |
| assertEquals(bl2.getLength(), length); |
| } |
| |
| private void verifyDeserialization(String[] ar1, String[] ar2) { |
| assertEquals(ar1.length, ar2.length); |
| |
| for(int i = 0; i < ar1.length; i++) |
| assertEquals(ar1[i], ar2[i]); |
| } |
| } |