| /** |
| * 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.server.namenode.ha; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.MiniDFSNNTopology; |
| import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys; |
| import org.junit.Test; |
| |
| /** |
| * This test makes sure that when |
| * {@link HdfsClientConfigKeys#DFS_CLIENT_TEST_DROP_NAMENODE_RESPONSE_NUM_KEY} is set, |
| * DFSClient instances can still be created within NN/DN (e.g., the fs instance |
| * used by the trash emptier thread in NN) |
| */ |
| public class TestLossyRetryInvocationHandler { |
| |
| @Test |
| public void testStartNNWithTrashEmptier() throws Exception { |
| MiniDFSCluster cluster = null; |
| Configuration conf = new HdfsConfiguration(); |
| |
| // enable both trash emptier and dropping response |
| conf.setLong("fs.trash.interval", 360); |
| conf.setInt(HdfsClientConfigKeys.DFS_CLIENT_TEST_DROP_NAMENODE_RESPONSE_NUM_KEY, 2); |
| |
| try { |
| cluster = new MiniDFSCluster.Builder(conf) |
| .nnTopology(MiniDFSNNTopology.simpleHATopology()).numDataNodes(0) |
| .build(); |
| cluster.waitActive(); |
| cluster.transitionToActive(0); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| } |