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[HOPS-995] Datanode doing full block report when starting a new namen…
…ode in multi-namenode setup
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183
.../hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestHABlockReports.java
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| /* | ||
| * Copyright (C) 2015 hops.io. | ||
| * | ||
| * Licensed 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; | ||
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||
| import org.apache.commons.logging.Log; | ||
| import org.apache.commons.logging.LogFactory; | ||
| import org.apache.commons.logging.impl.Log4JLogger; | ||
| import org.apache.hadoop.conf.Configuration; | ||
| import org.apache.hadoop.fs.FSDataOutputStream; | ||
| import org.apache.hadoop.fs.Path; | ||
| import org.apache.hadoop.hdfs.*; | ||
| import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor; | ||
| import org.apache.hadoop.hdfs.server.datanode.DataNode; | ||
| import org.apache.hadoop.hdfs.server.protocol.DatanodeCommand; | ||
| import org.apache.hadoop.hdfs.server.protocol.DatanodeRegistration; | ||
| import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols; | ||
| import org.apache.hadoop.hdfs.server.protocol.StorageBlockReport; | ||
| import org.apache.hadoop.metrics2.MetricsRecordBuilder; | ||
| import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem; | ||
| import org.apache.hadoop.test.MetricsAsserts; | ||
| import org.apache.log4j.Level; | ||
| import org.junit.After; | ||
| import org.junit.Before; | ||
| import org.junit.Test; | ||
| import org.mockito.Mockito; | ||
| import org.mockito.invocation.InvocationOnMock; | ||
| import org.mockito.stubbing.Answer; | ||
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|
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| import java.io.IOException; | ||
| import java.util.List; | ||
| import java.util.concurrent.TimeoutException; | ||
|
|
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| public class TestHABlockReports extends junit.framework.TestCase { | ||
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| public static final Log LOG = LogFactory.getLog(TestHABlockReports.class); | ||
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| Configuration conf = new HdfsConfiguration(); | ||
| MiniDFSCluster cluster = null; | ||
| int NUM_NAMENODES = 2; | ||
| int NUM_DATANODES = 3; | ||
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|
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| public void setconfig() { | ||
| conf.setInt(DFSConfigKeys.DFS_CLIENT_FAILOVER_MAX_ATTEMPTS_KEY, /*default 15*/ 1); | ||
| conf.setInt(DFSConfigKeys.DFS_CLIENT_RETRY_MAX_ATTEMPTS_KEY, /*default 10*/ 1); | ||
| conf.setInt(DFSConfigKeys.DFS_CLIENT_FAILOVER_SLEEPTIME_BASE_KEY, /*default 500*/ 500); | ||
| conf.setInt(DFSConfigKeys.DFS_CLIENT_FAILOVER_SLEEPTIME_MAX_KEY, /*default 15000*/1000); | ||
| conf.setInt(DFSConfigKeys.DFS_CLIENT_FAILOVER_CONNECTION_RETRIES_KEY, /*default 0*/ 0); | ||
| conf.setInt(DFSConfigKeys.DFS_CLIENT_FAILOVER_CONNECTION_RETRIES_ON_SOCKET_TIMEOUTS_KEY, | ||
| /*default 0*/0); | ||
| conf.setInt(DFSConfigKeys.IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SOCKET_TIMEOUTS_KEY, /*default | ||
| 45*/ 2); | ||
| conf.setInt(DFSConfigKeys.IPC_CLIENT_CONNECT_MAX_RETRIES_KEY, /*default 10*/ 1); | ||
| conf.set(DFSConfigKeys.DFS_CLIENT_RETRY_POLICY_SPEC_KEY, "1000,2"); | ||
| } | ||
|
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||
| /** | ||
| * Testing block reporting in a multi-namenode setup. When a new | ||
| * namenode is started then the datanodes connect to the new namenode. | ||
| * However, there is no need to send complete block report to the new | ||
| * namenode because the existing namenodes have already processed the block | ||
| * reports from the datanodes. | ||
| */ | ||
| @Test(timeout = 900000) | ||
| public void testMultiNNBlockReports() throws IOException, TimeoutException, InterruptedException { | ||
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| final int NN1 = 0, NN2 = 1; | ||
| if (NUM_NAMENODES < 2) { | ||
| NUM_NAMENODES = 2; | ||
| } | ||
|
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||
| try { | ||
| setconfig(); | ||
| cluster = new MiniDFSCluster.Builder(conf) | ||
| .nnTopology(MiniDFSNNTopology.simpleHOPSTopology(NUM_NAMENODES)) | ||
| .numDataNodes(NUM_DATANODES).build(); | ||
| cluster.waitActive(); | ||
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| Thread.sleep(10000); // make sure that all block reports are in | ||
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| assertEquals("Wrong number of block reports", 3, getTotalBRSent(cluster)); | ||
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| LOG.info("Cluster started. Total Block reports: " + getTotalBRSent(cluster)); | ||
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| //kill one namenode | ||
| cluster.shutdownNameNode(NN2); // now the cluster is running with 1 NN | ||
| LOG.info("Second namenode is killed"); | ||
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| // create some files and change the state of the datanodes | ||
| DistributedFileSystem fs = cluster.getFileSystem(0); | ||
| for (int i = 0; i < 5; i++) { | ||
| FSDataOutputStream out = fs.create(new Path("/test" + i)); | ||
| out.write(i); | ||
| out.close(); | ||
| } | ||
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| LOG.info("Created some files to change the state of the datanodes"); | ||
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| assertEquals("Wrong number of block reports", 3, getTotalBRSent(cluster)); | ||
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| cluster.restartNameNode(NN2); // now the cluster is running with 1 NN | ||
| cluster.waitActive(); | ||
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| Thread.sleep(10000); | ||
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| LOG.info("Restarted the second namenode. Total Block reports: " + getTotalBRSent(cluster)); | ||
| assertEquals("Wrong number of block reports", 3, getTotalBRSent(cluster)); | ||
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| } finally { | ||
| if (cluster != null) { | ||
| cluster.shutdown(); | ||
| } | ||
| } | ||
| } | ||
|
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| // | ||
| @Test(timeout = 900000) | ||
| public void testAllDeadNamenodes() throws IOException, TimeoutException, InterruptedException { | ||
| final int NN1 = 0, NN2 = 1; | ||
| if (NUM_NAMENODES < 2) { | ||
| NUM_NAMENODES = 2; | ||
| } | ||
|
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| try { | ||
| setconfig(); | ||
| cluster = new MiniDFSCluster.Builder(conf) | ||
| .nnTopology(MiniDFSNNTopology.simpleHOPSTopology(NUM_NAMENODES)) | ||
| .numDataNodes(NUM_DATANODES).build(); | ||
| cluster.waitActive(); | ||
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| Thread.sleep(10000); // make sure that all block reports are in | ||
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| assertEquals("Wrong number of block reports", 3, getTotalBRSent(cluster)); | ||
| LOG.info("Cluster started. Total Block reports: " + getTotalBRSent(cluster)); | ||
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| cluster.shutdownNameNode(NN1); | ||
| cluster.shutdownNameNode(NN2); | ||
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| Thread.sleep(10000); // make sure that all block reports are in | ||
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| cluster.restartNameNode(NN1, false); | ||
| cluster.restartNameNode(NN2, false); | ||
| cluster.getNameNode(0).metrics.incrAddBlockOps(); | ||
| cluster.waitActive(); | ||
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| Thread.sleep(10000); // make sure that all block reports are in | ||
|
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| // 3 more block reports are received from the 3 datanodes | ||
| assertEquals("Wrong number of block reports", 6, getTotalBRSent(cluster)); | ||
| LOG.info("Cluster started. Total Block reports: " + getTotalBRSent(cluster)); | ||
|
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| } finally { | ||
| if (cluster != null) { | ||
| cluster.shutdown(); | ||
| } | ||
| } | ||
|
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| } | ||
|
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| private long getTotalBRSent(MiniDFSCluster cluster) { | ||
| long counter = 0; | ||
| List<DataNode> datanodes = cluster.getDataNodes(); | ||
| for (DataNode dn : datanodes) { | ||
| MetricsRecordBuilder rb = MetricsAsserts.getMetrics(dn.getMetrics().name()); | ||
| counter += MetricsAsserts.getLongCounter("BlockReportCount", rb); | ||
| } | ||
| return counter; | ||
| } | ||
| } |