| /** |
| * 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.datanode; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.MiniDFSNNTopology; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.mockito.Mockito; |
| |
| /** |
| * Tests if DataNode process exits if all Block Pool services exit. |
| */ |
| public class TestDataNodeExit { |
| private static final long WAIT_TIME_IN_MILLIS = 10; |
| Configuration conf; |
| MiniDFSCluster cluster = null; |
| |
| @Before |
| public void setUp() throws IOException { |
| conf = new HdfsConfiguration(); |
| conf.setInt(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 100); |
| conf.setInt(DFSConfigKeys.DFS_BYTES_PER_CHECKSUM_KEY, 100); |
| cluster = new MiniDFSCluster.Builder(conf) |
| .nnTopology(MiniDFSNNTopology.simpleFederatedTopology(3)) |
| .build(); |
| for (int i = 0; i < 3; i++) { |
| cluster.waitActive(i); |
| } |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| if (cluster != null) { |
| cluster.shutdown(); |
| cluster = null; |
| } |
| } |
| |
| private void stopBPServiceThreads(int numStopThreads, DataNode dn) |
| throws Exception { |
| List<BPOfferService> bpoList = dn.getAllBpOs(); |
| int expected = dn.getBpOsCount() - numStopThreads; |
| int index = numStopThreads - 1; |
| while (index >= 0) { |
| bpoList.get(index--).stop(); |
| } |
| int iterations = 3000; // Total 30 seconds MAX wait time |
| while(dn.getBpOsCount() != expected && iterations > 0) { |
| Thread.sleep(WAIT_TIME_IN_MILLIS); |
| iterations--; |
| } |
| assertEquals("Mismatch in number of BPServices running", expected, |
| dn.getBpOsCount()); |
| } |
| |
| /** |
| * Test BPService Thread Exit |
| */ |
| @Test |
| public void testBPServiceExit() throws Exception { |
| DataNode dn = cluster.getDataNodes().get(0); |
| stopBPServiceThreads(1, dn); |
| assertTrue("DataNode should not exit", dn.isDatanodeUp()); |
| stopBPServiceThreads(2, dn); |
| assertFalse("DataNode should exit", dn.isDatanodeUp()); |
| } |
| |
| @Test |
| public void testSendOOBToPeers() throws Exception { |
| DataNode dn = cluster.getDataNodes().get(0); |
| DataXceiverServer spyXserver = Mockito.spy(dn.getXferServer()); |
| NullPointerException npe = new NullPointerException(); |
| Mockito.doThrow(npe).when(spyXserver).sendOOBToPeers(); |
| dn.xserver = spyXserver; |
| try { |
| dn.shutdown(); |
| } catch (Exception e) { |
| fail("DataNode shutdown should not have thrown exception " + e); |
| } |
| } |
| } |