| /* |
| * 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.accumulo.test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.security.SecureRandom; |
| import java.util.Random; |
| import java.util.SortedSet; |
| import java.util.TreeSet; |
| |
| import org.apache.accumulo.core.client.Accumulo; |
| import org.apache.accumulo.core.client.AccumuloClient; |
| import org.apache.accumulo.core.client.BatchWriter; |
| import org.apache.accumulo.core.client.admin.NewTableConfiguration; |
| import org.apache.accumulo.core.conf.Property; |
| import org.apache.accumulo.core.data.Mutation; |
| import org.apache.accumulo.core.security.Authorizations; |
| import org.apache.accumulo.minicluster.ServerType; |
| import org.apache.accumulo.miniclusterImpl.MiniAccumuloClusterImpl.ProcessInfo; |
| import org.apache.accumulo.miniclusterImpl.MiniAccumuloConfigImpl; |
| import org.apache.accumulo.miniclusterImpl.ProcessReference; |
| import org.apache.accumulo.server.util.Admin; |
| import org.apache.accumulo.test.functional.ConfigurableMacBase; |
| import org.apache.accumulo.tserver.TabletServer; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.RawLocalFileSystem; |
| import org.apache.hadoop.io.Text; |
| import org.junit.Test; |
| |
| import com.google.common.collect.Iterators; |
| |
| public class VerifySerialRecoveryIT extends ConfigurableMacBase { |
| |
| private static final byte[] HEXCHARS = {0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, |
| 0x39, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66}; |
| private static final Random random = new SecureRandom(); |
| |
| public static byte[] randomHex(int n) { |
| byte[] binary = new byte[n]; |
| byte[] hex = new byte[n * 2]; |
| random.nextBytes(binary); |
| int count = 0; |
| for (byte x : binary) { |
| hex[count++] = HEXCHARS[(x >> 4) & 0xf]; |
| hex[count++] = HEXCHARS[x & 0xf]; |
| } |
| return hex; |
| } |
| |
| @Override |
| public void configure(MiniAccumuloConfigImpl cfg, Configuration hadoopCoreSite) { |
| cfg.setNumTservers(1); |
| cfg.setProperty(Property.INSTANCE_ZK_TIMEOUT, "15s"); |
| cfg.setProperty(Property.TSERV_ASSIGNMENT_MAXCONCURRENT, "20"); |
| hadoopCoreSite.set("fs.file.impl", RawLocalFileSystem.class.getName()); |
| } |
| |
| @Override |
| protected int defaultTimeoutSeconds() { |
| return 4 * 60; |
| } |
| |
| @Test |
| public void testSerializedRecovery() throws Exception { |
| // make a table with many splits |
| String tableName = getUniqueNames(1)[0]; |
| try (AccumuloClient c = Accumulo.newClient().from(getClientProperties()).build()) { |
| |
| // create splits |
| SortedSet<Text> splits = new TreeSet<>(); |
| for (int i = 0; i < 200; i++) { |
| splits.add(new Text(randomHex(8))); |
| } |
| |
| // create table with config |
| NewTableConfiguration ntc = new NewTableConfiguration().withSplits(splits); |
| c.tableOperations().create(tableName, ntc); |
| |
| // load data to give the recovery something to do |
| try (BatchWriter bw = c.createBatchWriter(tableName)) { |
| for (int i = 0; i < 50000; i++) { |
| Mutation m = new Mutation(randomHex(8)); |
| m.put("", "", ""); |
| bw.addMutation(m); |
| } |
| } |
| // kill the tserver |
| for (ProcessReference ref : getCluster().getProcesses().get(ServerType.TABLET_SERVER)) |
| getCluster().killProcess(ServerType.TABLET_SERVER, ref); |
| final ProcessInfo ts = cluster.exec(TabletServer.class); |
| |
| // wait for recovery |
| Iterators.size(c.createScanner(tableName, Authorizations.EMPTY).iterator()); |
| assertEquals(0, cluster.exec(Admin.class, "stopAll").getProcess().waitFor()); |
| ts.getProcess().waitFor(); |
| String result = ts.readStdOut(); |
| for (String line : result.split("\n")) { |
| System.out.println(line); |
| } |
| // walk through the output, verifying that only a single normal recovery was running at one |
| // time |
| boolean started = false; |
| int recoveries = 0; |
| for (String line : result.split("\n")) { |
| // ignore metadata tables |
| if (line.contains("!0") || line.contains("+r")) |
| continue; |
| if (line.contains("recovering data from walogs")) { |
| assertFalse(started); |
| started = true; |
| recoveries++; |
| } |
| if (line.matches(".*recovered \\d+ mutations creating \\d+ entries from \\d+ walogs.*")) { |
| assertTrue(started); |
| started = false; |
| } |
| } |
| assertFalse(started); |
| assertTrue(recoveries > 0); |
| } |
| } |
| } |