| /** |
| * 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 java.io.*; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| |
| public class TestLease extends junit.framework.TestCase { |
| static boolean hasLease(MiniDFSCluster cluster, Path src) { |
| return cluster.getNamesystem().leaseManager.getLeaseByPath(src.toString()) != null; |
| } |
| |
| final Path dir = new Path("/test/lease/"); |
| |
| public void testLease() throws Exception { |
| Configuration conf = new HdfsConfiguration(); |
| MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null); |
| try { |
| FileSystem fs = cluster.getFileSystem(); |
| assertTrue(fs.mkdirs(dir)); |
| |
| Path a = new Path(dir, "a"); |
| Path b = new Path(dir, "b"); |
| |
| DataOutputStream a_out = fs.create(a); |
| a_out.writeBytes("something"); |
| |
| assertTrue(hasLease(cluster, a)); |
| assertTrue(!hasLease(cluster, b)); |
| |
| DataOutputStream b_out = fs.create(b); |
| b_out.writeBytes("something"); |
| |
| assertTrue(hasLease(cluster, a)); |
| assertTrue(hasLease(cluster, b)); |
| |
| a_out.close(); |
| b_out.close(); |
| |
| assertTrue(!hasLease(cluster, a)); |
| assertTrue(!hasLease(cluster, b)); |
| |
| fs.delete(dir, true); |
| } finally { |
| if (cluster != null) {cluster.shutdown();} |
| } |
| } |
| } |