| /** |
| * 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.fail; |
| import static org.mockito.Mockito.doReturn; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolClientSideTranslatorPB; |
| import org.apache.hadoop.hdfs.server.common.HdfsServerConstants; |
| import org.apache.hadoop.hdfs.server.common.IncorrectVersionException; |
| import org.apache.hadoop.hdfs.server.protocol.NamespaceInfo; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.apache.hadoop.util.VersionInfo; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestDatanodeRegister { |
| public static final Log LOG = LogFactory.getLog(TestDatanodeRegister.class); |
| |
| // Invalid address |
| private static final InetSocketAddress INVALID_ADDR = |
| new InetSocketAddress("127.0.0.1", 1); |
| |
| private BPServiceActor actor; |
| NamespaceInfo fakeNsInfo; |
| DNConf mockDnConf; |
| |
| @Before |
| public void setUp() throws IOException { |
| mockDnConf = mock(DNConf.class); |
| doReturn(VersionInfo.getVersion()).when(mockDnConf).getMinimumNameNodeVersion(); |
| |
| DataNode mockDN = mock(DataNode.class); |
| doReturn(true).when(mockDN).shouldRun(); |
| doReturn(mockDnConf).when(mockDN).getDnConf(); |
| |
| BPOfferService mockBPOS = mock(BPOfferService.class); |
| doReturn(mockDN).when(mockBPOS).getDataNode(); |
| |
| actor = new BPServiceActor(INVALID_ADDR, null, mockBPOS); |
| |
| fakeNsInfo = mock(NamespaceInfo.class); |
| // Return a a good software version. |
| doReturn(VersionInfo.getVersion()).when(fakeNsInfo).getSoftwareVersion(); |
| // Return a good layout version for now. |
| doReturn(HdfsServerConstants.NAMENODE_LAYOUT_VERSION).when(fakeNsInfo) |
| .getLayoutVersion(); |
| |
| DatanodeProtocolClientSideTranslatorPB fakeDnProt = |
| mock(DatanodeProtocolClientSideTranslatorPB.class); |
| when(fakeDnProt.versionRequest()).thenReturn(fakeNsInfo); |
| actor.setNameNode(fakeDnProt); |
| } |
| |
| @Test |
| public void testSoftwareVersionDifferences() throws Exception { |
| // We expect no exception to be thrown when the software versions match. |
| assertEquals(VersionInfo.getVersion(), |
| actor.retrieveNamespaceInfo().getSoftwareVersion()); |
| |
| // We expect no exception to be thrown when the min NN version is below the |
| // reported NN version. |
| doReturn("4.0.0").when(fakeNsInfo).getSoftwareVersion(); |
| doReturn("3.0.0").when(mockDnConf).getMinimumNameNodeVersion(); |
| assertEquals("4.0.0", actor.retrieveNamespaceInfo().getSoftwareVersion()); |
| |
| // When the NN reports a version that's too low, throw an exception. |
| doReturn("3.0.0").when(fakeNsInfo).getSoftwareVersion(); |
| doReturn("4.0.0").when(mockDnConf).getMinimumNameNodeVersion(); |
| try { |
| actor.retrieveNamespaceInfo(); |
| fail("Should have thrown an exception for NN with too-low version"); |
| } catch (IncorrectVersionException ive) { |
| GenericTestUtils.assertExceptionContains( |
| "The reported NameNode version is too low", ive); |
| LOG.info("Got expected exception", ive); |
| } |
| } |
| |
| @Test |
| public void testDifferentLayoutVersions() throws Exception { |
| // We expect no exceptions to be thrown when the layout versions match. |
| assertEquals(HdfsServerConstants.NAMENODE_LAYOUT_VERSION, |
| actor.retrieveNamespaceInfo().getLayoutVersion()); |
| |
| // We expect an exception to be thrown when the NN reports a layout version |
| // different from that of the DN. |
| doReturn(HdfsServerConstants.NAMENODE_LAYOUT_VERSION * 1000).when(fakeNsInfo) |
| .getLayoutVersion(); |
| try { |
| actor.retrieveNamespaceInfo(); |
| } catch (IOException e) { |
| fail("Should not fail to retrieve NS info from DN with different layout version"); |
| } |
| } |
| } |