| /** |
| * 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.hdfs; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileChecksum; |
| import org.apache.hadoop.fs.Path; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestGetFileChecksum { |
| private static final int BLOCKSIZE = 1024; |
| private static final short REPLICATION = 3; |
| |
| private Configuration conf; |
| private MiniDFSCluster cluster; |
| private DistributedFileSystem dfs; |
| |
| @Before |
| public void setUp() throws Exception { |
| conf = new Configuration(); |
| conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCKSIZE); |
| cluster = new MiniDFSCluster.Builder(conf).numDataNodes(REPLICATION) |
| .build(); |
| cluster.waitActive(); |
| dfs = cluster.getFileSystem(); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| |
| public void testGetFileChecksum(final Path foo, final int appendLength) |
| throws Exception { |
| final int appendRounds = 16; |
| FileChecksum[] fc = new FileChecksum[appendRounds + 1]; |
| DFSTestUtil.createFile(dfs, foo, appendLength, REPLICATION, 0L); |
| fc[0] = dfs.getFileChecksum(foo); |
| for (int i = 0; i < appendRounds; i++) { |
| DFSTestUtil.appendFile(dfs, foo, appendLength); |
| fc[i + 1] = dfs.getFileChecksum(foo); |
| } |
| |
| for (int i = 0; i < appendRounds + 1; i++) { |
| FileChecksum checksum = dfs.getFileChecksum(foo, appendLength * (i+1)); |
| Assert.assertTrue(checksum.equals(fc[i])); |
| } |
| } |
| |
| @Test |
| public void testGetFileChecksum() throws Exception { |
| testGetFileChecksum(new Path("/foo"), BLOCKSIZE / 4); |
| testGetFileChecksum(new Path("/bar"), BLOCKSIZE / 4 - 1); |
| } |
| } |