| /** |
| * 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 static org.apache.hadoop.fs.CommonConfigurationKeys.HA_HM_RPC_TIMEOUT_DEFAULT; |
| import static org.apache.hadoop.fs.CommonConfigurationKeys.HA_HM_RPC_TIMEOUT_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_LIFELINE_RPC_ADDRESS_KEY; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.ha.HAServiceProtocol; |
| import org.apache.hadoop.ha.HealthCheckFailedException; |
| import org.apache.hadoop.hdfs.DFSUtil; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.MiniDFSNNTopology; |
| import org.apache.hadoop.hdfs.server.namenode.MockNameNodeResourceChecker; |
| import org.apache.hadoop.hdfs.tools.NNHAServiceTarget; |
| import org.apache.hadoop.ipc.RemoteException; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestNNHealthCheck { |
| |
| private MiniDFSCluster cluster; |
| private Configuration conf; |
| |
| @Before |
| public void setup() { |
| conf = new Configuration(); |
| } |
| |
| @After |
| public void shutdown() { |
| if (cluster != null) { |
| cluster.shutdown(); |
| cluster = null; |
| } |
| } |
| |
| @Test |
| public void testNNHealthCheck() throws IOException { |
| cluster = new MiniDFSCluster.Builder(conf) |
| .numDataNodes(0) |
| .nnTopology(MiniDFSNNTopology.simpleHATopology()) |
| .build(); |
| doNNHealthCheckTest(); |
| } |
| |
| @Test |
| public void testNNHealthCheckWithLifelineAddress() throws IOException { |
| conf.set(DFS_NAMENODE_LIFELINE_RPC_ADDRESS_KEY, "0.0.0.0:0"); |
| cluster = new MiniDFSCluster.Builder(conf) |
| .numDataNodes(0) |
| .nnTopology(MiniDFSNNTopology.simpleHATopology()) |
| .build(); |
| doNNHealthCheckTest(); |
| } |
| |
| private void doNNHealthCheckTest() throws IOException { |
| MockNameNodeResourceChecker mockResourceChecker = |
| new MockNameNodeResourceChecker(conf); |
| cluster.getNameNode(0).getNamesystem() |
| .setNNResourceChecker(mockResourceChecker); |
| |
| NNHAServiceTarget haTarget = new NNHAServiceTarget(conf, |
| DFSUtil.getNamenodeNameServiceId(conf), "nn1"); |
| final String expectedTargetString; |
| if (conf.get(DFS_NAMENODE_LIFELINE_RPC_ADDRESS_KEY + "." + |
| DFSUtil.getNamenodeNameServiceId(conf) + ".nn1") != null) { |
| expectedTargetString = haTarget.getHealthMonitorAddress().toString(); |
| } else { |
| expectedTargetString = haTarget.getAddress().toString(); |
| } |
| assertTrue("Expected haTarget " + haTarget + " containing " + |
| expectedTargetString, |
| haTarget.toString().contains(expectedTargetString)); |
| HAServiceProtocol rpc = haTarget.getHealthMonitorProxy(conf, conf.getInt( |
| HA_HM_RPC_TIMEOUT_KEY, HA_HM_RPC_TIMEOUT_DEFAULT)); |
| |
| // Should not throw error, which indicates healthy. |
| rpc.monitorHealth(); |
| |
| mockResourceChecker.setResourcesAvailable(false); |
| |
| try { |
| // Should throw error - NN is unhealthy. |
| rpc.monitorHealth(); |
| fail("Should not have succeeded in calling monitorHealth"); |
| } catch (HealthCheckFailedException hcfe) { |
| GenericTestUtils.assertExceptionContains( |
| "The NameNode has no resources available", hcfe); |
| } catch (RemoteException re) { |
| GenericTestUtils.assertExceptionContains( |
| "The NameNode has no resources available", |
| re.unwrapRemoteException(HealthCheckFailedException.class)); |
| } |
| } |
| } |