/**
*
* 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.hbase;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.NavigableSet;
import java.util.Random;
import java.util.Set;
import java.util.UUID;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.impl.Jdk14Logger;
import org.apache.commons.logging.impl.Log4JLogger;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.catalog.MetaEditor;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HConnection;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.fs.HFileSystem;
import org.apache.hadoop.hbase.io.compress.Compression;
import org.apache.hadoop.hbase.io.compress.Compression.Algorithm;
import org.apache.hadoop.hbase.io.encoding.DataBlockEncoding;
import org.apache.hadoop.hbase.io.hfile.ChecksumUtil;
import org.apache.hadoop.hbase.mapreduce.MapreduceTestingShim;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.master.ServerManager;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.regionserver.HStore;
import org.apache.hadoop.hbase.regionserver.InternalScanner;
import org.apache.hadoop.hbase.regionserver.MultiVersionConsistencyControl;
import org.apache.hadoop.hbase.regionserver.StoreFile;
import org.apache.hadoop.hbase.security.User;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.FSUtils;
import org.apache.hadoop.hbase.util.JVMClusterUtil;
import org.apache.hadoop.hbase.util.JVMClusterUtil.MasterThread;
import org.apache.hadoop.hbase.util.RegionSplitter;
import org.apache.hadoop.hbase.util.Threads;
import org.apache.hadoop.hbase.zookeeper.EmptyWatcher;
import org.apache.hadoop.hbase.zookeeper.MiniZooKeeperCluster;
import org.apache.hadoop.hbase.zookeeper.ZKAssign;
import org.apache.hadoop.hbase.zookeeper.ZKConfig;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.apache.hadoop.hdfs.DFSClient;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MiniMRCluster;
import org.apache.hadoop.mapred.TaskLog;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.KeeperException.NodeExistsException;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.ZooKeeper.States;
/**
* Facility for testing HBase. Replacement for
* old HBaseTestCase and HBaseClusterTestCase functionality.
* Create an instance and keep it around testing HBase. This class is
* meant to be your one-stop shop for anything you might need testing. Manages
* one cluster at a time only. Managed cluster can be an in-process
* {@link MiniHBaseCluster}, or a deployed cluster of type {@link DistributedHBaseCluster}.
* Not all methods work with the real cluster.
* Depends on log4j being on classpath and
* hbase-site.xml for logging and test-run configuration. It does not set
* logging levels nor make changes to configuration parameters.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class HBaseTestingUtility extends HBaseCommonTestingUtility {
private Configuration conf;
private MiniZooKeeperCluster zkCluster = null;
/**
* The default number of regions per regionserver when creating a pre-split
* table.
*/
private static int DEFAULT_REGIONS_PER_SERVER = 5;
/**
* Set if we were passed a zkCluster. If so, we won't shutdown zk as
* part of general shutdown.
*/
private boolean passedZkCluster = false;
private MiniDFSCluster dfsCluster = null;
private HBaseCluster hbaseCluster = null;
private MiniMRCluster mrCluster = null;
/** If there is a mini cluster running for this testing utility instance. */
private boolean miniClusterRunning;
private String hadoopLogDir;
/** Directory (a subdirectory of dataTestDir) used by the dfs cluster if any */
private File clusterTestDir = null;
/** Directory on test filesystem where we put the data for this instance of
* HBaseTestingUtility*/
private Path dataTestDirOnTestFS = null;
/**
* System property key to get test directory value.
* Name is as it is because mini dfs has hard-codings to put test data here.
* It should NOT be used directly in HBase, as it's a property used in
* mini dfs.
* @deprecated can be used only with mini dfs
*/
private static final String TEST_DIRECTORY_KEY = "test.build.data";
/** Filesystem URI used for map-reduce mini-cluster setup */
private static String FS_URI;
/** A set of ports that have been claimed using {@link #randomFreePort()}. */
private static final Set<Integer> takenRandomPorts = new HashSet<Integer>();
/** Compression algorithms to use in parameterized JUnit 4 tests */
public static final List<Object[]> COMPRESSION_ALGORITHMS_PARAMETERIZED =
Arrays.asList(new Object[][] {
{ Compression.Algorithm.NONE },
{ Compression.Algorithm.GZ }
});
/** This is for unit tests parameterized with a single boolean. */
public static final List<Object[]> BOOLEAN_PARAMETERIZED =
Arrays.asList(new Object[][] {
{ new Boolean(false) },
{ new Boolean(true) }
});
/** Compression algorithms to use in testing */
public static final Compression.Algorithm[] COMPRESSION_ALGORITHMS ={
Compression.Algorithm.NONE, Compression.Algorithm.GZ
};
/**
* Create all combinations of Bloom filters and compression algorithms for
* testing.
*/
private static List<Object[]> bloomAndCompressionCombinations() {
List<Object[]> configurations = new ArrayList<Object[]>();
for (Compression.Algorithm comprAlgo :
HBaseTestingUtility.COMPRESSION_ALGORITHMS) {
for (StoreFile.BloomType bloomType : StoreFile.BloomType.values()) {
configurations.add(new Object[] { comprAlgo, bloomType });
}
}
return Collections.unmodifiableList(configurations);
}
public static final Collection<Object[]> BLOOM_AND_COMPRESSION_COMBINATIONS =
bloomAndCompressionCombinations();
public HBaseTestingUtility() {
this(HBaseConfiguration.create());
}
public HBaseTestingUtility(Configuration conf) {
this.conf = conf;
// a hbase checksum verification failure will cause unit tests to fail
ChecksumUtil.generateExceptionForChecksumFailureForTest(true);
}
/**
* Returns this classes's instance of {@link Configuration}. Be careful how
* you use the returned Configuration since {@link HConnection} instances
* can be shared. The Map of HConnections is keyed by the Configuration. If
* say, a Connection was being used against a cluster that had been shutdown,
* see {@link #shutdownMiniCluster()}, then the Connection will no longer
* be wholesome. Rather than use the return direct, its usually best to
* make a copy and use that. Do
* <code>Configuration c = new Configuration(INSTANCE.getConfiguration());</code>
* @return Instance of Configuration.
*/
public Configuration getConfiguration() {
return this.conf;
}
public void setHBaseCluster(HBaseCluster hbaseCluster) {
this.hbaseCluster = hbaseCluster;
}
/**
* Home our data in a dir under {@link #DEFAULT_BASE_TEST_DIRECTORY}.
* Give it a random name so can have many concurrent tests running if
* we need to. It needs to amend the {@link #TEST_DIRECTORY_KEY}
* System property, as it's what minidfscluster bases
* it data dir on. Moding a System property is not the way to do concurrent
* instances -- another instance could grab the temporary
* value unintentionally -- but not anything can do about it at moment;
* single instance only is how the minidfscluster works.
*
* We also create the underlying directory for
* hadoop.log.dir, mapred.local.dir and hadoop.tmp.dir, and set the values
* in the conf, and as a system property for hadoop.tmp.dir
*
* @return The calculated data test build directory, if newly-created.
*/
@Override
protected Path setupDataTestDir() {
Path testPath = super.setupDataTestDir();
if (null == testPath) {
return null;
}
createSubDirAndSystemProperty(
"hadoop.log.dir",
testPath, "hadoop-log-dir");
// This is defaulted in core-default.xml to /tmp/hadoop-${user.name}, but
// we want our own value to ensure uniqueness on the same machine
createSubDirAndSystemProperty(
"hadoop.tmp.dir",
testPath, "hadoop-tmp-dir");
// Read and modified in org.apache.hadoop.mapred.MiniMRCluster
createSubDir(
"mapred.local.dir",
testPath, "mapred-local-dir");
return testPath;
}
private void createSubDir(String propertyName, Path parent, String subDirName){
Path newPath= new Path(parent, subDirName);
File newDir = new File(newPath.toString()).getAbsoluteFile();
newDir.deleteOnExit();
conf.set(propertyName, newDir.getAbsolutePath());
}
private void createSubDirAndSystemProperty(
String propertyName, Path parent, String subDirName){
String sysValue = System.getProperty(propertyName);
if (sysValue != null) {
// There is already a value set. So we do nothing but hope
// that there will be no conflicts
LOG.info("System.getProperty(\""+propertyName+"\") already set to: "+
sysValue + " so I do NOT create it in " + parent);
String confValue = conf.get(propertyName);
if (confValue != null && !confValue.endsWith(sysValue)){
LOG.warn(
propertyName + " property value differs in configuration and system: "+
"Configuration="+confValue+" while System="+sysValue+
" Erasing configuration value by system value."
);
}
conf.set(propertyName, sysValue);
} else {
// Ok, it's not set, so we create it as a subdirectory
createSubDir(propertyName, parent, subDirName);
System.setProperty(propertyName, conf.get(propertyName));
}
}
/**
* @return Where to write test data on the test filesystem; Returns working directory
* for the test filesytem by default
* @see #setupDataTestDirOnTestFS()
* @see #getTestFileSystem()
*/
private Path getBaseTestDirOnTestFS() throws IOException {
FileSystem fs = getTestFileSystem();
return new Path(fs.getWorkingDirectory(), "test-data");
}
/**
* @return Where the DFS cluster will write data on the local subsystem.
* Creates it if it does not exist already. A subdir of {@link #getBaseTestDir()}
* @see #getTestFileSystem()
*/
Path getClusterTestDir() {
if (clusterTestDir == null){
setupClusterTestDir();
}
return new Path(clusterTestDir.getAbsolutePath());
}
/**
* Creates a directory for the DFS cluster, under the test data
*/
private void setupClusterTestDir() {
if (clusterTestDir != null) {
return;
}
// Using randomUUID ensures that multiple clusters can be launched by
// a same test, if it stops & starts them
Path testDir = getDataTestDir("dfscluster_" + UUID.randomUUID().toString());
clusterTestDir = new File(testDir.toString()).getAbsoluteFile();
// Have it cleaned up on exit
clusterTestDir.deleteOnExit();
conf.set(TEST_DIRECTORY_KEY, clusterTestDir.getPath());
LOG.info("Created new mini-cluster data directory: " + clusterTestDir);
}
/**
* Returns a Path in the test filesystem, obtained from {@link #getTestFileSystem()}
* to write temporary test data. Call this method after setting up the mini dfs cluster
* if the test relies on it.
* @return a unique path in the test filesystem
*/
public Path getDataTestDirOnTestFS() throws IOException {
if (dataTestDirOnTestFS == null) {
setupDataTestDirOnTestFS();
}
return dataTestDirOnTestFS;
}
/**
* Returns a Path in the test filesystem, obtained from {@link #getTestFileSystem()}
* to write temporary test data. Call this method after setting up the mini dfs cluster
* if the test relies on it.
* @return a unique path in the test filesystem
* @param subdirName name of the subdir to create under the base test dir
*/
public Path getDataTestDirOnTestFS(final String subdirName) throws IOException {
return new Path(getDataTestDirOnTestFS(), subdirName);
}
/**
* Sets up a path in test filesystem to be used by tests
*/
private void setupDataTestDirOnTestFS() throws IOException {
if (dataTestDirOnTestFS != null) {
LOG.warn("Data test on test fs dir already setup in "
+ dataTestDirOnTestFS.toString());
return;
}
//The file system can be either local, mini dfs, or if the configuration
//is supplied externally, it can be an external cluster FS. If it is a local
//file system, the tests should use getBaseTestDir, otherwise, we can use
//the working directory, and create a unique sub dir there
FileSystem fs = getTestFileSystem();
if (fs.getUri().getScheme().equals(fs.getLocal(conf).getUri().getScheme())) {
File dataTestDir = new File(getDataTestDir().toString());
dataTestDirOnTestFS = new Path(dataTestDir.getAbsolutePath());
} else {
Path base = getBaseTestDirOnTestFS();
String randomStr = UUID.randomUUID().toString();
dataTestDirOnTestFS = new Path(base, randomStr);
fs.deleteOnExit(dataTestDirOnTestFS);
}
}
/**
* Start a minidfscluster.
* @param servers How many DNs to start.
* @throws Exception
* @see {@link #shutdownMiniDFSCluster()}
* @return The mini dfs cluster created.
*/
public MiniDFSCluster startMiniDFSCluster(int servers) throws Exception {
return startMiniDFSCluster(servers, null);
}
/**
* Start a minidfscluster.
* This is useful if you want to run datanode on distinct hosts for things
* like HDFS block location verification.
* If you start MiniDFSCluster without host names, all instances of the
* datanodes will have the same host name.
* @param hosts hostnames DNs to run on.
* @throws Exception
* @see {@link #shutdownMiniDFSCluster()}
* @return The mini dfs cluster created.
*/
public MiniDFSCluster startMiniDFSCluster(final String hosts[])
throws Exception {
if ( hosts != null && hosts.length != 0) {
return startMiniDFSCluster(hosts.length, hosts);
} else {
return startMiniDFSCluster(1, null);
}
}
/**
* Start a minidfscluster.
* Can only create one.
* @param servers How many DNs to start.
* @param hosts hostnames DNs to run on.
* @throws Exception
* @see {@link #shutdownMiniDFSCluster()}
* @return The mini dfs cluster created.
*/
public MiniDFSCluster startMiniDFSCluster(int servers, final String hosts[])
throws Exception {
createDirsAndSetProperties();
this.dfsCluster = new MiniDFSCluster(0, this.conf, servers, true, true,
true, null, null, hosts, null);
// Set this just-started cluster as our filesystem.
FileSystem fs = this.dfsCluster.getFileSystem();
this.conf.set("fs.defaultFS", fs.getUri().toString());
// Do old style too just to be safe.
this.conf.set("fs.default.name", fs.getUri().toString());
// Wait for the cluster to be totally up
this.dfsCluster.waitClusterUp();
//reset the test directory for test file system
dataTestDirOnTestFS = null;
return this.dfsCluster;
}
public MiniDFSCluster startMiniDFSCluster(int servers, final String racks[], String hosts[])
throws Exception {
createDirsAndSetProperties();
this.dfsCluster = new MiniDFSCluster(0, this.conf, servers, true, true,
true, null, racks, hosts, null);
// Set this just-started cluster as our filesystem.
FileSystem fs = this.dfsCluster.getFileSystem();
this.conf.set("fs.defaultFS", fs.getUri().toString());
// Do old style too just to be safe.
this.conf.set("fs.default.name", fs.getUri().toString());
// Wait for the cluster to be totally up
this.dfsCluster.waitClusterUp();
//reset the test directory for test file system
dataTestDirOnTestFS = null;
return this.dfsCluster;
}
public MiniDFSCluster startMiniDFSClusterForTestHLog(int namenodePort) throws IOException {
createDirsAndSetProperties();
dfsCluster = new MiniDFSCluster(namenodePort, conf, 5, false, true, true, null,
null, null, null);
return dfsCluster;
}
/** This is used before starting HDFS and map-reduce mini-clusters */
private void createDirsAndSetProperties() throws IOException {
setupClusterTestDir();
System.setProperty(TEST_DIRECTORY_KEY, clusterTestDir.getPath());
createDirAndSetProperty("cache_data", "test.cache.data");
createDirAndSetProperty("hadoop_tmp", "hadoop.tmp.dir");
hadoopLogDir = createDirAndSetProperty("hadoop_logs", "hadoop.log.dir");
createDirAndSetProperty("mapred_local", "mapred.local.dir");
createDirAndSetProperty("mapred_temp", "mapred.temp.dir");
enableShortCircuit();
Path root = getDataTestDirOnTestFS("hadoop");
conf.set(MapreduceTestingShim.getMROutputDirProp(),
new Path(root, "mapred-output-dir").toString());
conf.set("mapred.system.dir", new Path(root, "mapred-system-dir").toString());
conf.set("mapreduce.jobtracker.staging.root.dir",
new Path(root, "mapreduce-jobtracker-staging-root-dir").toString());
conf.set("mapred.working.dir", new Path(root, "mapred-working-dir").toString());
}
/**
* Get the HBase setting for dfs.client.read.shortcircuit from the conf or a system property.
* This allows to specify this parameter on the command line.
* If not set, default is true.
*/
public boolean isReadShortCircuitOn(){
final String propName = "hbase.tests.use.shortcircuit.reads";
String readOnProp = System.getProperty(propName);
if (readOnProp != null){
return Boolean.parseBoolean(readOnProp);
} else {
return conf.getBoolean(propName, true);
}
}
/** Enable the short circuit read, unless configured differently.
* Set both HBase and HDFS settings, including skipping the hdfs checksum checks.
*/
private void enableShortCircuit() {
if (isReadShortCircuitOn()) {
String curUser = System.getProperty("user.name");
LOG.info("read short circuit is ON for user " + curUser);
// read short circuit, for hdfs
conf.set("dfs.block.local-path-access.user", curUser);
// read short circuit, for hbase
conf.setBoolean("dfs.client.read.shortcircuit", true);
// Skip checking checksum, for the hdfs client and the datanode
conf.setBoolean("dfs.client.read.shortcircuit.skip.checksum", true);
} else {
LOG.info("read short circuit is OFF");
}
}
private String createDirAndSetProperty(final String relPath, String property) {
String path = getDataTestDir(relPath).toString();
System.setProperty(property, path);
conf.set(property, path);
new File(path).mkdirs();
LOG.info("Setting " + property + " to " + path + " in system properties and HBase conf");
return path;
}
/**
* Shuts down instance created by call to {@link #startMiniDFSCluster(int)}
* or does nothing.
* @throws IOException
*/
public void shutdownMiniDFSCluster() throws IOException {
if (this.dfsCluster != null) {
// The below throws an exception per dn, AsynchronousCloseException.
this.dfsCluster.shutdown();
dfsCluster = null;
dataTestDirOnTestFS = null;
this.conf.set("fs.defaultFS", "file:///");
this.conf.set("fs.default.name", "file:///");
}
}
/**
* Call this if you only want a zk cluster.
* @see #startMiniZKCluster() if you want zk + dfs + hbase mini cluster.
* @throws Exception
* @see #shutdownMiniZKCluster()
* @return zk cluster started.
*/
public MiniZooKeeperCluster startMiniZKCluster() throws Exception {
return startMiniZKCluster(1);
}
/**
* Call this if you only want a zk cluster.
* @param zooKeeperServerNum
* @see #startMiniZKCluster() if you want zk + dfs + hbase mini cluster.
* @throws Exception
* @see #shutdownMiniZKCluster()
* @return zk cluster started.
*/
public MiniZooKeeperCluster startMiniZKCluster(int zooKeeperServerNum)
throws Exception {
setupClusterTestDir();
return startMiniZKCluster(clusterTestDir, zooKeeperServerNum);
}
private MiniZooKeeperCluster startMiniZKCluster(final File dir)
throws Exception {
return startMiniZKCluster(dir,1);
}
/**
* Start a mini ZK cluster. If the property "test.hbase.zookeeper.property.clientPort" is set
* the port mentionned is used as the default port for ZooKeeper.
*/
private MiniZooKeeperCluster startMiniZKCluster(final File dir,
int zooKeeperServerNum)
throws Exception {
if (this.zkCluster != null) {
throw new IOException("Cluster already running at " + dir);
}
this.passedZkCluster = false;
this.zkCluster = new MiniZooKeeperCluster(this.getConfiguration());
final int defPort = this.conf.getInt("test.hbase.zookeeper.property.clientPort", 0);
if (defPort > 0){
// If there is a port in the config file, we use it.
this.zkCluster.setDefaultClientPort(defPort);
}
int clientPort = this.zkCluster.startup(dir,zooKeeperServerNum);
this.conf.set(HConstants.ZOOKEEPER_CLIENT_PORT,
Integer.toString(clientPort));
return this.zkCluster;
}
/**
* Shuts down zk cluster created by call to {@link #startMiniZKCluster(File)}
* or does nothing.
* @throws IOException
* @see #startMiniZKCluster()
*/
public void shutdownMiniZKCluster() throws IOException {
if (this.zkCluster != null) {
this.zkCluster.shutdown();
this.zkCluster = null;
}
}
/**
* Start up a minicluster of hbase, dfs, and zookeeper.
* @throws Exception
* @return Mini hbase cluster instance created.
* @see {@link #shutdownMiniDFSCluster()}
*/
public MiniHBaseCluster startMiniCluster() throws Exception {
return startMiniCluster(1, 1);
}
/**
* Start up a minicluster of hbase, optionally dfs, and zookeeper.
* Modifies Configuration. Homes the cluster data directory under a random
* subdirectory in a directory under System property test.build.data.
* Directory is cleaned up on exit.
* @param numSlaves Number of slaves to start up. We'll start this many
* datanodes and regionservers. If numSlaves is > 1, then make sure
* hbase.regionserver.info.port is -1 (i.e. no ui per regionserver) otherwise
* bind errors.
* @throws Exception
* @see {@link #shutdownMiniCluster()}
* @return Mini hbase cluster instance created.
*/
public MiniHBaseCluster startMiniCluster(final int numSlaves)
throws Exception {
return startMiniCluster(1, numSlaves);
}
/**
* start minicluster
* @throws Exception
* @see {@link #shutdownMiniCluster()}
* @return Mini hbase cluster instance created.
*/
public MiniHBaseCluster startMiniCluster(final int numMasters,
final int numSlaves)
throws Exception {
return startMiniCluster(numMasters, numSlaves, null);
}
/**
* Start up a minicluster of hbase, optionally dfs, and zookeeper.
* Modifies Configuration. Homes the cluster data directory under a random
* subdirectory in a directory under System property test.build.data.
* Directory is cleaned up on exit.
* @param numMasters Number of masters to start up. We'll start this many
* hbase masters. If numMasters > 1, you can find the active/primary master
* with {@link MiniHBaseCluster#getMaster()}.
* @param numSlaves Number of slaves to start up. We'll start this many
* regionservers. If dataNodeHosts == null, this also indicates the number of
* datanodes to start. If dataNodeHosts != null, the number of datanodes is
* based on dataNodeHosts.length.
* If numSlaves is > 1, then make sure
* hbase.regionserver.info.port is -1 (i.e. no ui per regionserver) otherwise
* bind errors.
* @param dataNodeHosts hostnames DNs to run on.
* This is useful if you want to run datanode on distinct hosts for things
* like HDFS block location verification.
* If you start MiniDFSCluster without host names,
* all instances of the datanodes will have the same host name.
* @throws Exception
* @see {@link #shutdownMiniCluster()}
* @return Mini hbase cluster instance created.
*/
public MiniHBaseCluster startMiniCluster(final int numMasters,
final int numSlaves, final String[] dataNodeHosts)
throws Exception {
int numDataNodes = numSlaves;
if ( dataNodeHosts != null && dataNodeHosts.length != 0) {
numDataNodes = dataNodeHosts.length;
}
LOG.info("Starting up minicluster with " + numMasters + " master(s) and " +
numSlaves + " regionserver(s) and " + numDataNodes + " datanode(s)");
// If we already put up a cluster, fail.
if (miniClusterRunning) {
throw new IllegalStateException("A mini-cluster is already running");
}
miniClusterRunning = true;
setupClusterTestDir();
System.setProperty(TEST_DIRECTORY_KEY, this.clusterTestDir.getPath());
// Bring up mini dfs cluster. This spews a bunch of warnings about missing
// scheme. Complaints are 'Scheme is undefined for build/test/data/dfs/name1'.
startMiniDFSCluster(numDataNodes, dataNodeHosts);
// Start up a zk cluster.
if (this.zkCluster == null) {
startMiniZKCluster(clusterTestDir);
}
// Start the MiniHBaseCluster
return startMiniHBaseCluster(numMasters, numSlaves);
}
public MiniHBaseCluster startMiniHBaseCluster(final int numMasters, final int numSlaves)
throws IOException, InterruptedException{
return startMiniHBaseCluster(numMasters, numSlaves, null, null);
}
/**
* Starts up mini hbase cluster. Usually used after call to
* {@link #startMiniCluster(int, int)} when doing stepped startup of clusters.
* Usually you won't want this. You'll usually want {@link #startMiniCluster()}.
* @param numMasters
* @param numSlaves
* @return Reference to the hbase mini hbase cluster.
* @throws IOException
* @throws InterruptedException
* @see {@link #startMiniCluster()}
*/
public MiniHBaseCluster startMiniHBaseCluster(final int numMasters,
final int numSlaves, Class<? extends HMaster> masterClass,
Class<? extends MiniHBaseCluster.MiniHBaseClusterRegionServer> regionserverClass)
throws IOException, InterruptedException {
// Now do the mini hbase cluster. Set the hbase.rootdir in config.
createRootDir();
// These settings will make the server waits until this exact number of
// regions servers are connected.
if (conf.getInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, -1) == -1) {
conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, numSlaves);
}
if (conf.getInt(ServerManager.WAIT_ON_REGIONSERVERS_MAXTOSTART, -1) == -1) {
conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MAXTOSTART, numSlaves);
}
Configuration c = new Configuration(this.conf);
this.hbaseCluster =
new MiniHBaseCluster(c, numMasters, numSlaves, masterClass, regionserverClass);
// Don't leave here till we've done a successful scan of the .META.
HTable t = new HTable(c, HConstants.META_TABLE_NAME);
ResultScanner s = t.getScanner(new Scan());
while (s.next() != null) {
continue;
}
s.close();
t.close();
getHBaseAdmin(); // create immediately the hbaseAdmin
LOG.info("Minicluster is up");
return (MiniHBaseCluster)this.hbaseCluster;
}
/**
* Starts the hbase cluster up again after shutting it down previously in a
* test. Use this if you want to keep dfs/zk up and just stop/start hbase.
* @param servers number of region servers
* @throws IOException
*/
public void restartHBaseCluster(int servers) throws IOException, InterruptedException {
this.hbaseCluster = new MiniHBaseCluster(this.conf, servers);
// Don't leave here till we've done a successful scan of the .META.
HTable t = new HTable(new Configuration(this.conf), HConstants.META_TABLE_NAME);
ResultScanner s = t.getScanner(new Scan());
while (s.next() != null) {
// do nothing
}
LOG.info("HBase has been restarted");
s.close();
t.close();
}
/**
* @return Current mini hbase cluster. Only has something in it after a call
* to {@link #startMiniCluster()}.
* @see #startMiniCluster()
*/
public MiniHBaseCluster getMiniHBaseCluster() {
if (this.hbaseCluster instanceof MiniHBaseCluster) {
return (MiniHBaseCluster)this.hbaseCluster;
}
throw new RuntimeException(hbaseCluster + " not an instance of " +
MiniHBaseCluster.class.getName());
}
/**
* Stops mini hbase, zk, and hdfs clusters.
* @throws IOException
* @see {@link #startMiniCluster(int)}
*/
public void shutdownMiniCluster() throws Exception {
LOG.info("Shutting down minicluster");
shutdownMiniHBaseCluster();
if (!this.passedZkCluster){
shutdownMiniZKCluster();
}
shutdownMiniDFSCluster();
cleanupTestDir();
miniClusterRunning = false;
LOG.info("Minicluster is down");
}
/**
* Shutdown HBase mini cluster. Does not shutdown zk or dfs if running.
* @throws IOException
*/
public void shutdownMiniHBaseCluster() throws IOException {
if (hbaseAdmin != null) {
hbaseAdmin.close();
hbaseAdmin = null;
}
if (zooKeeperWatcher != null) {
zooKeeperWatcher.close();
zooKeeperWatcher = null;
}
// unset the configuration for MIN and MAX RS to start
conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, -1);
conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MAXTOSTART, -1);
if (this.hbaseCluster != null) {
this.hbaseCluster.shutdown();
// Wait till hbase is down before going on to shutdown zk.
this.hbaseCluster.waitUntilShutDown();
this.hbaseCluster = null;
}
}
/**
* Returns the path to the default root dir the minicluster uses.
* Note: this does not cause the root dir to be created.
* @return Fully qualified path for the default hbase root dir
* @throws IOException
*/
public Path getDefaultRootDirPath() throws IOException {
FileSystem fs = FileSystem.get(this.conf);
return new Path(fs.makeQualified(fs.getHomeDirectory()),"hbase");
}
/**
* Creates an hbase rootdir in user home directory. Also creates hbase
* version file. Normally you won't make use of this method. Root hbasedir
* is created for you as part of mini cluster startup. You'd only use this
* method if you were doing manual operation.
* @return Fully qualified path to hbase root dir
* @throws IOException
*/
public Path createRootDir() throws IOException {
FileSystem fs = FileSystem.get(this.conf);
Path hbaseRootdir = getDefaultRootDirPath();
this.conf.set(HConstants.HBASE_DIR, hbaseRootdir.toString());
fs.mkdirs(hbaseRootdir);
FSUtils.setVersion(fs, hbaseRootdir);
return hbaseRootdir;
}
/**
* Flushes all caches in the mini hbase cluster
* @throws IOException
*/
public void flush() throws IOException {
getMiniHBaseCluster().flushcache();
}
/**
* Flushes all caches in the mini hbase cluster
* @throws IOException
*/
public void flush(byte [] tableName) throws IOException {
getMiniHBaseCluster().flushcache(tableName);
}
/**
* Compact all regions in the mini hbase cluster
* @throws IOException
*/
public void compact(boolean major) throws IOException {
getMiniHBaseCluster().compact(major);
}
/**
* Compact all of a table's reagion in the mini hbase cluster
* @throws IOException
*/
public void compact(byte [] tableName, boolean major) throws IOException {
getMiniHBaseCluster().compact(tableName, major);
}
/**
* Create a table.
* @param tableName
* @param family
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[] family)
throws IOException{
return createTable(tableName, new byte[][]{family});
}
/**
* Create a table.
* @param tableName
* @param families
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[][] families)
throws IOException {
return createTable(tableName, families,
new Configuration(getConfiguration()));
}
public HTable createTable(byte[] tableName, byte[][] families,
int numVersions, byte[] startKey, byte[] endKey, int numRegions)
throws IOException{
HTableDescriptor desc = new HTableDescriptor(tableName);
for (byte[] family : families) {
HColumnDescriptor hcd = new HColumnDescriptor(family)
.setMaxVersions(numVersions);
desc.addFamily(hcd);
}
getHBaseAdmin().createTable(desc, startKey, endKey, numRegions);
return new HTable(getConfiguration(), tableName);
}
/**
* Create a table.
* @param tableName
* @param families
* @param c Configuration to use
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[][] families,
final Configuration c)
throws IOException {
HTableDescriptor desc = new HTableDescriptor(tableName);
for(byte[] family : families) {
desc.addFamily(new HColumnDescriptor(family));
}
getHBaseAdmin().createTable(desc);
return new HTable(c, tableName);
}
/**
* Create a table.
* @param tableName
* @param families
* @param c Configuration to use
* @param numVersions
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[][] families,
final Configuration c, int numVersions)
throws IOException {
HTableDescriptor desc = new HTableDescriptor(tableName);
for(byte[] family : families) {
HColumnDescriptor hcd = new HColumnDescriptor(family)
.setMaxVersions(numVersions);
desc.addFamily(hcd);
}
getHBaseAdmin().createTable(desc);
return new HTable(c, tableName);
}
/**
* Create a table.
* @param tableName
* @param family
* @param numVersions
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[] family, int numVersions)
throws IOException {
return createTable(tableName, new byte[][]{family}, numVersions);
}
/**
* Create a table.
* @param tableName
* @param families
* @param numVersions
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[][] families,
int numVersions)
throws IOException {
HTableDescriptor desc = new HTableDescriptor(tableName);
for (byte[] family : families) {
HColumnDescriptor hcd = new HColumnDescriptor(family)
.setMaxVersions(numVersions);
desc.addFamily(hcd);
}
getHBaseAdmin().createTable(desc);
return new HTable(new Configuration(getConfiguration()), tableName);
}
/**
* Create a table.
* @param tableName
* @param families
* @param numVersions
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[][] families,
int numVersions, int blockSize) throws IOException {
HTableDescriptor desc = new HTableDescriptor(tableName);
for (byte[] family : families) {
HColumnDescriptor hcd = new HColumnDescriptor(family)
.setMaxVersions(numVersions)
.setBlocksize(blockSize);
desc.addFamily(hcd);
}
getHBaseAdmin().createTable(desc);
return new HTable(new Configuration(getConfiguration()), tableName);
}
/**
* Create a table.
* @param tableName
* @param families
* @param numVersions
* @return An HTable instance for the created table.
* @throws IOException
*/
public HTable createTable(byte[] tableName, byte[][] families,
int[] numVersions)
throws IOException {
HTableDescriptor desc = new HTableDescriptor(tableName);
int i = 0;
for (byte[] family : families) {
HColumnDescriptor hcd = new HColumnDescriptor(family)
.setMaxVersions(numVersions[i]);
desc.addFamily(hcd);
i++;
}
getHBaseAdmin().createTable(desc);
return new HTable(new Configuration(getConfiguration()), tableName);
}
/**
* Drop an existing table
* @param tableName existing table
*/
public void deleteTable(byte[] tableName) throws IOException {
try {
getHBaseAdmin().disableTable(tableName);
} catch (TableNotEnabledException e) {
LOG.debug("Table: " + Bytes.toString(tableName) + " already disabled, so just deleting it.");
}
getHBaseAdmin().deleteTable(tableName);
}
/**
* Provide an existing table name to truncate
* @param tableName existing table
* @return HTable to that new table
* @throws IOException
*/
public HTable truncateTable(byte [] tableName) throws IOException {
HTable table = new HTable(getConfiguration(), tableName);
Scan scan = new Scan();
ResultScanner resScan = table.getScanner(scan);
for(Result res : resScan) {
Delete del = new Delete(res.getRow());
table.delete(del);
}
resScan = table.getScanner(scan);
resScan.close();
return table;
}
/**
* Load table with rows from 'aaa' to 'zzz'.
* @param t Table
* @param f Family
* @return Count of rows loaded.
* @throws IOException
*/
public int loadTable(final HTable t, final byte[] f) throws IOException {
t.setAutoFlush(false);
byte[] k = new byte[3];
int rowCount = 0;
for (byte b1 = 'a'; b1 <= 'z'; b1++) {
for (byte b2 = 'a'; b2 <= 'z'; b2++) {
for (byte b3 = 'a'; b3 <= 'z'; b3++) {
k[0] = b1;
k[1] = b2;
k[2] = b3;
Put put = new Put(k);
put.add(f, null, k);
t.put(put);
rowCount++;
}
}
}
t.flushCommits();
return rowCount;
}
/**
* Load table of multiple column families with rows from 'aaa' to 'zzz'.
* @param t Table
* @param f Array of Families to load
* @return Count of rows loaded.
* @throws IOException
*/
public int loadTable(final HTable t, final byte[][] f) throws IOException {
t.setAutoFlush(false);
byte[] k = new byte[3];
int rowCount = 0;
for (byte b1 = 'a'; b1 <= 'z'; b1++) {
for (byte b2 = 'a'; b2 <= 'z'; b2++) {
for (byte b3 = 'a'; b3 <= 'z'; b3++) {
k[0] = b1;
k[1] = b2;
k[2] = b3;
Put put = new Put(k);
for (int i = 0; i < f.length; i++) {
put.add(f[i], null, k);
}
t.put(put);
rowCount++;
}
}
}
t.flushCommits();
return rowCount;
}
public int loadRegion(final HRegion r, final byte[] f) throws IOException {
return loadRegion(r, f, false);
}
/**
* Load region with rows from 'aaa' to 'zzz'.
* @param r Region
* @param f Family
* @param flush flush the cache if true
* @return Count of rows loaded.
* @throws IOException
*/
public int loadRegion(final HRegion r, final byte[] f, final boolean flush)
throws IOException {
byte[] k = new byte[3];
int rowCount = 0;
for (byte b1 = 'a'; b1 <= 'z'; b1++) {
for (byte b2 = 'a'; b2 <= 'z'; b2++) {
for (byte b3 = 'a'; b3 <= 'z'; b3++) {
k[0] = b1;
k[1] = b2;
k[2] = b3;
Put put = new Put(k);
put.add(f, null, k);
if (r.getLog() == null) put.setWriteToWAL(false);
r.put(put);
rowCount++;
}
}
if (flush) {
r.flushcache();
}
}
return rowCount;
}
/**
* Return the number of rows in the given table.
*/
public int countRows(final HTable table) throws IOException {
Scan scan = new Scan();
ResultScanner results = table.getScanner(scan);
int count = 0;
for (@SuppressWarnings("unused") Result res : results) {
count++;
}
results.close();
return count;
}
/**
* Return an md5 digest of the entire contents of a table.
*/
public String checksumRows(final HTable table) throws Exception {
Scan scan = new Scan();
ResultScanner results = table.getScanner(scan);
MessageDigest digest = MessageDigest.getInstance("MD5");
for (Result res : results) {
digest.update(res.getRow());
}
results.close();
return digest.toString();
}
/**
* Creates many regions names "aaa" to "zzz".
*
* @param table The table to use for the data.
* @param columnFamily The family to insert the data into.
* @return count of regions created.
* @throws IOException When creating the regions fails.
*/
public int createMultiRegions(HTable table, byte[] columnFamily)
throws IOException {
return createMultiRegions(getConfiguration(), table, columnFamily);
}
public static final byte[][] KEYS = {
HConstants.EMPTY_BYTE_ARRAY, Bytes.toBytes("bbb"),
Bytes.toBytes("ccc"), Bytes.toBytes("ddd"), Bytes.toBytes("eee"),
Bytes.toBytes("fff"), Bytes.toBytes("ggg"), Bytes.toBytes("hhh"),
Bytes.toBytes("iii"), Bytes.toBytes("jjj"), Bytes.toBytes("kkk"),
Bytes.toBytes("lll"), Bytes.toBytes("mmm"), Bytes.toBytes("nnn"),
Bytes.toBytes("ooo"), Bytes.toBytes("ppp"), Bytes.toBytes("qqq"),
Bytes.toBytes("rrr"), Bytes.toBytes("sss"), Bytes.toBytes("ttt"),
Bytes.toBytes("uuu"), Bytes.toBytes("vvv"), Bytes.toBytes("www"),
Bytes.toBytes("xxx"), Bytes.toBytes("yyy")
};
/**
* Creates many regions names "aaa" to "zzz".
* @param c Configuration to use.
* @param table The table to use for the data.
* @param columnFamily The family to insert the data into.
* @return count of regions created.
* @throws IOException When creating the regions fails.
*/
public int createMultiRegions(final Configuration c, final HTable table,
final byte[] columnFamily)
throws IOException {
return createMultiRegions(c, table, columnFamily, KEYS);
}
/**
* Creates the specified number of regions in the specified table.
* @param c
* @param table
* @param family
* @param numRegions
* @return
* @throws IOException
*/
public int createMultiRegions(final Configuration c, final HTable table,
final byte [] family, int numRegions)
throws IOException {
if (numRegions < 3) throw new IOException("Must create at least 3 regions");
byte [] startKey = Bytes.toBytes("aaaaa");
byte [] endKey = Bytes.toBytes("zzzzz");
byte [][] splitKeys = Bytes.split(startKey, endKey, numRegions - 3);
byte [][] regionStartKeys = new byte[splitKeys.length+1][];
for (int i=0;i<splitKeys.length;i++) {
regionStartKeys[i+1] = splitKeys[i];
}
regionStartKeys[0] = HConstants.EMPTY_BYTE_ARRAY;
return createMultiRegions(c, table, family, regionStartKeys);
}
public int createMultiRegions(final Configuration c, final HTable table,
final byte[] columnFamily, byte [][] startKeys)
throws IOException {
Arrays.sort(startKeys, Bytes.BYTES_COMPARATOR);
HTable meta = new HTable(c, HConstants.META_TABLE_NAME);
HTableDescriptor htd = table.getTableDescriptor();
if(!htd.hasFamily(columnFamily)) {
HColumnDescriptor hcd = new HColumnDescriptor(columnFamily);
htd.addFamily(hcd);
}
// remove empty region - this is tricky as the mini cluster during the test
// setup already has the "<tablename>,,123456789" row with an empty start
// and end key. Adding the custom regions below adds those blindly,
// including the new start region from empty to "bbb". lg
List<byte[]> rows = getMetaTableRows(htd.getName());
String regionToDeleteInFS = table
.getRegionsInRange(Bytes.toBytes(""), Bytes.toBytes("")).get(0)
.getRegionInfo().getEncodedName();
List<HRegionInfo> newRegions = new ArrayList<HRegionInfo>(startKeys.length);
// add custom ones
int count = 0;
for (int i = 0; i < startKeys.length; i++) {
int j = (i + 1) % startKeys.length;
HRegionInfo hri = new HRegionInfo(table.getTableName(),
startKeys[i], startKeys[j]);
MetaEditor.addRegionToMeta(meta, hri);
newRegions.add(hri);
count++;
}
// see comment above, remove "old" (or previous) single region
for (byte[] row : rows) {
LOG.info("createMultiRegions: deleting meta row -> " +
Bytes.toStringBinary(row));
meta.delete(new Delete(row));
}
// remove the "old" region from FS
Path tableDir = new Path(getDefaultRootDirPath().toString()
+ System.getProperty("file.separator") + htd.getNameAsString()
+ System.getProperty("file.separator") + regionToDeleteInFS);
getDFSCluster().getFileSystem().delete(tableDir);
// flush cache of regions
HConnection conn = table.getConnection();
conn.clearRegionCache();
// assign all the new regions IF table is enabled.
HBaseAdmin admin = getHBaseAdmin();
if (admin.isTableEnabled(table.getTableName())) {
for(HRegionInfo hri : newRegions) {
admin.assign(hri.getRegionName());
}
}
meta.close();
return count;
}
/**
* Create rows in META for regions of the specified table with the specified
* start keys. The first startKey should be a 0 length byte array if you
* want to form a proper range of regions.
* @param conf
* @param htd
* @param startKeys
* @return list of region info for regions added to meta
* @throws IOException
*/
public List<HRegionInfo> createMultiRegionsInMeta(final Configuration conf,
final HTableDescriptor htd, byte [][] startKeys)
throws IOException {
HTable meta = new HTable(conf, HConstants.META_TABLE_NAME);
Arrays.sort(startKeys, Bytes.BYTES_COMPARATOR);
List<HRegionInfo> newRegions = new ArrayList<HRegionInfo>(startKeys.length);
// add custom ones
for (int i = 0; i < startKeys.length; i++) {
int j = (i + 1) % startKeys.length;
HRegionInfo hri = new HRegionInfo(htd.getName(), startKeys[i],
startKeys[j]);
MetaEditor.addRegionToMeta(meta, hri);
newRegions.add(hri);
}
meta.close();
return newRegions;
}
/**
* Returns all rows from the .META. table.
*
* @throws IOException When reading the rows fails.
*/
public List<byte[]> getMetaTableRows() throws IOException {
// TODO: Redo using MetaReader class
HTable t = new HTable(new Configuration(this.conf), HConstants.META_TABLE_NAME);
List<byte[]> rows = new ArrayList<byte[]>();
ResultScanner s = t.getScanner(new Scan());
for (Result result : s) {
LOG.info("getMetaTableRows: row -> " +
Bytes.toStringBinary(result.getRow()));
rows.add(result.getRow());
}
s.close();
t.close();
return rows;
}
/**
* Returns all rows from the .META. table for a given user table
*
* @throws IOException When reading the rows fails.
*/
public List<byte[]> getMetaTableRows(byte[] tableName) throws IOException {
// TODO: Redo using MetaReader.
HTable t = new HTable(new Configuration(this.conf), HConstants.META_TABLE_NAME);
List<byte[]> rows = new ArrayList<byte[]>();
ResultScanner s = t.getScanner(new Scan());
for (Result result : s) {
HRegionInfo info = HRegionInfo.getHRegionInfo(result);
if (info == null) {
LOG.error("No region info for row " + Bytes.toString(result.getRow()));
// TODO figure out what to do for this new hosed case.
continue;
}
if (Bytes.compareTo(info.getTableName(), tableName) == 0) {
LOG.info("getMetaTableRows: row -> " +
Bytes.toStringBinary(result.getRow()) + info);
rows.add(result.getRow());
}
}
s.close();
t.close();
return rows;
}
/**
* Tool to get the reference to the region server object that holds the
* region of the specified user table.
* It first searches for the meta rows that contain the region of the
* specified table, then gets the index of that RS, and finally retrieves
* the RS's reference.
* @param tableName user table to lookup in .META.
* @return region server that holds it, null if the row doesn't exist
* @throws IOException
*/
public HRegionServer getRSForFirstRegionInTable(byte[] tableName)
throws IOException {
List<byte[]> metaRows = getMetaTableRows(tableName);
if (metaRows == null || metaRows.isEmpty()) {
return null;
}
LOG.debug("Found " + metaRows.size() + " rows for table " +
Bytes.toString(tableName));
byte [] firstrow = metaRows.get(0);
LOG.debug("FirstRow=" + Bytes.toString(firstrow));
int index = getMiniHBaseCluster().getServerWith(firstrow);
return getMiniHBaseCluster().getRegionServerThreads().get(index).getRegionServer();
}
/**
* Starts a <code>MiniMRCluster</code> with a default number of
* <code>TaskTracker</code>'s.
*
* @throws IOException When starting the cluster fails.
*/
public MiniMRCluster startMiniMapReduceCluster() throws IOException {
startMiniMapReduceCluster(2);
return mrCluster;
}
/**
* Tasktracker has a bug where changing the hadoop.log.dir system property
* will not change its internal static LOG_DIR variable.
*/
private void forceChangeTaskLogDir() {
Field logDirField;
try {
logDirField = TaskLog.class.getDeclaredField("LOG_DIR");
logDirField.setAccessible(true);
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
modifiersField.setInt(logDirField, logDirField.getModifiers() & ~Modifier.FINAL);
logDirField.set(null, new File(hadoopLogDir, "userlogs"));
} catch (SecurityException e) {
throw new RuntimeException(e);
} catch (NoSuchFieldException e) {
// TODO Auto-generated catch block
throw new RuntimeException(e);
} catch (IllegalArgumentException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
/**
* Starts a <code>MiniMRCluster</code>. Call {@link #setFileSystemURI(String)} to use a different
* filesystem.
* @param servers The number of <code>TaskTracker</code>'s to start.
* @throws IOException When starting the cluster fails.
*/
private void startMiniMapReduceCluster(final int servers) throws IOException {
if (mrCluster != null) {
throw new IllegalStateException("MiniMRCluster is already running");
}
LOG.info("Starting mini mapreduce cluster...");
setupClusterTestDir();
createDirsAndSetProperties();
forceChangeTaskLogDir();
// Allow the user to override FS URI for this map-reduce cluster to use.
mrCluster = new MiniMRCluster(servers,
FS_URI != null ? FS_URI : FileSystem.get(conf).getUri().toString(), 1,
null, null, new JobConf(this.conf));
JobConf jobConf = MapreduceTestingShim.getJobConf(mrCluster);
if (jobConf == null) {
jobConf = mrCluster.createJobConf();
}
jobConf.set("mapred.local.dir",
conf.get("mapred.local.dir")); //Hadoop MiniMR overwrites this while it should not
LOG.info("Mini mapreduce cluster started");
// Needed for TestImportTsv.
conf.set("mapred.job.tracker", jobConf.get("mapred.job.tracker"));
// this for mrv2 support; mr1 ignores this
conf.set("mapreduce.framework.name", "yarn");
String rmAdress = jobConf.get("yarn.resourcemanager.address");
if (rmAdress != null) {
conf.set("yarn.resourcemanager.address", rmAdress);
}
String schedulerAdress =
jobConf.get("yarn.resourcemanager.scheduler.address");
if (schedulerAdress != null) {
conf.set("yarn.resourcemanager.scheduler.address", schedulerAdress);
}
}
/**
* Stops the previously started <code>MiniMRCluster</code>.
*/
public void shutdownMiniMapReduceCluster() {
LOG.info("Stopping mini mapreduce cluster...");
if (mrCluster != null) {
mrCluster.shutdown();
mrCluster = null;
}
// Restore configuration to point to local jobtracker
conf.set("mapred.job.tracker", "local");
LOG.info("Mini mapreduce cluster stopped");
}
/**
* Switches the logger for the given class to DEBUG level.
*
* @param clazz The class for which to switch to debug logging.
*/
public void enableDebug(Class<?> clazz) {
Log l = LogFactory.getLog(clazz);
if (l instanceof Log4JLogger) {
((Log4JLogger) l).getLogger().setLevel(org.apache.log4j.Level.DEBUG);
} else if (l instanceof Jdk14Logger) {
((Jdk14Logger) l).getLogger().setLevel(java.util.logging.Level.ALL);
}
}
/**
* Expire the Master's session
* @throws Exception
*/
public void expireMasterSession() throws Exception {
HMaster master = getMiniHBaseCluster().getMaster();
expireSession(master.getZooKeeper(), false);
}
/**
* Expire a region server's session
* @param index which RS
* @throws Exception
*/
public void expireRegionServerSession(int index) throws Exception {
HRegionServer rs = getMiniHBaseCluster().getRegionServer(index);
expireSession(rs.getZooKeeper(), false);
decrementMinRegionServerCount();
}
private void decrementMinRegionServerCount() {
// decrement the count for this.conf, for newly spwaned master
// this.hbaseCluster shares this configuration too
decrementMinRegionServerCount(getConfiguration());
// each master thread keeps a copy of configuration
for (MasterThread master : getHBaseCluster().getMasterThreads()) {
decrementMinRegionServerCount(master.getMaster().getConfiguration());
}
}
private void decrementMinRegionServerCount(Configuration conf) {
int currentCount = conf.getInt(
ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, -1);
if (currentCount != -1) {
conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART,
Math.max(currentCount - 1, 1));
}
}
public void expireSession(ZooKeeperWatcher nodeZK) throws Exception {
expireSession(nodeZK, false);
}
@Deprecated
public void expireSession(ZooKeeperWatcher nodeZK, Server server)
throws Exception {
expireSession(nodeZK, false);
}
/**
* Expire a ZooKeeper session as recommended in ZooKeeper documentation
* http://wiki.apache.org/hadoop/ZooKeeper/FAQ#A4
* There are issues when doing this:
* [1] http://www.mail-archive.com/dev@zookeeper.apache.org/msg01942.html
* [2] https://issues.apache.org/jira/browse/ZOOKEEPER-1105
*
* @param nodeZK - the ZK watcher to expire
* @param checkStatus - true to check if we can create an HTable with the
* current configuration.
*/
public void expireSession(ZooKeeperWatcher nodeZK, boolean checkStatus)
throws Exception {
Configuration c = new Configuration(this.conf);
String quorumServers = ZKConfig.getZKQuorumServersString(c);
ZooKeeper zk = nodeZK.getRecoverableZooKeeper().getZooKeeper();
byte[] password = zk.getSessionPasswd();
long sessionID = zk.getSessionId();
// Expiry seems to be asynchronous (see comment from P. Hunt in [1]),
// so we create a first watcher to be sure that the
// event was sent. We expect that if our watcher receives the event
// other watchers on the same machine will get is as well.
// When we ask to close the connection, ZK does not close it before
// we receive all the events, so don't have to capture the event, just
// closing the connection should be enough.
ZooKeeper monitor = new ZooKeeper(quorumServers,
1000, new org.apache.zookeeper.Watcher(){
@Override
public void process(WatchedEvent watchedEvent) {
LOG.info("Monitor ZKW received event="+watchedEvent);
}
} , sessionID, password);
// Making it expire
ZooKeeper newZK = new ZooKeeper(quorumServers,
1000, EmptyWatcher.instance, sessionID, password);
//ensure that we have connection to the server before closing down, otherwise
//the close session event will be eaten out before we start CONNECTING state
long start = System.currentTimeMillis();
while (newZK.getState() != States.CONNECTED
&& System.currentTimeMillis() - start < 1000) {
Thread.sleep(1);
}
newZK.close();
LOG.info("ZK Closed Session 0x" + Long.toHexString(sessionID));
// Now closing & waiting to be sure that the clients get it.
monitor.close();
if (checkStatus) {
new HTable(new Configuration(conf), HConstants.META_TABLE_NAME).close();
}
}
/**
* Get the Mini HBase cluster.
*
* @return hbase cluster
* @see #getHBaseClusterInterface()
*/
public MiniHBaseCluster getHBaseCluster() {
return getMiniHBaseCluster();
}
/**
* Returns the HBaseCluster instance.
* <p>Returned object can be any of the subclasses of HBaseCluster, and the
* tests referring this should not assume that the cluster is a mini cluster or a
* distributed one. If the test only works on a mini cluster, then specific
* method {@link #getMiniHBaseCluster()} can be used instead w/o the
* need to type-cast.
*/
public HBaseCluster getHBaseClusterInterface() {
//implementation note: we should rename this method as #getHBaseCluster(),
//but this would require refactoring 90+ calls.
return hbaseCluster;
}
/**
* Returns a HBaseAdmin instance.
* This instance is shared between HBaseTestingUtility instance users.
* Don't close it, it will be closed automatically when the
* cluster shutdowns
*
* @return The HBaseAdmin instance.
* @throws IOException
*/
public synchronized HBaseAdmin getHBaseAdmin()
throws IOException {
if (hbaseAdmin == null){
hbaseAdmin = new HBaseAdmin(getConfiguration());
}
return hbaseAdmin;
}
private HBaseAdmin hbaseAdmin = null;
/**
* Returns a ZooKeeperWatcher instance.
* This instance is shared between HBaseTestingUtility instance users.
* Don't close it, it will be closed automatically when the
* cluster shutdowns
*
* @return The ZooKeeperWatcher instance.
* @throws IOException
*/
public synchronized ZooKeeperWatcher getZooKeeperWatcher()
throws IOException {
if (zooKeeperWatcher == null) {
zooKeeperWatcher = new ZooKeeperWatcher(conf, "testing utility",
new Abortable() {
@Override public void abort(String why, Throwable e) {
throw new RuntimeException("Unexpected abort in HBaseTestingUtility:"+why, e);
}
@Override public boolean isAborted() {return false;}
});
}
return zooKeeperWatcher;
}
private ZooKeeperWatcher zooKeeperWatcher;
/**
* Closes the named region.
*
* @param regionName The region to close.
* @throws IOException
*/
public void closeRegion(String regionName) throws IOException {
closeRegion(Bytes.toBytes(regionName));
}
/**
* Closes the named region.
*
* @param regionName The region to close.
* @throws IOException
*/
public void closeRegion(byte[] regionName) throws IOException {
getHBaseAdmin().closeRegion(regionName, null);
}
/**
* Closes the region containing the given row.
*
* @param row The row to find the containing region.
* @param table The table to find the region.
* @throws IOException
*/
public void closeRegionByRow(String row, HTable table) throws IOException {
closeRegionByRow(Bytes.toBytes(row), table);
}
/**
* Closes the region containing the given row.
*
* @param row The row to find the containing region.
* @param table The table to find the region.
* @throws IOException
*/
public void closeRegionByRow(byte[] row, HTable table) throws IOException {
HRegionLocation hrl = table.getRegionLocation(row);
closeRegion(hrl.getRegionInfo().getRegionName());
}
public MiniZooKeeperCluster getZkCluster() {
return zkCluster;
}
public void setZkCluster(MiniZooKeeperCluster zkCluster) {
this.passedZkCluster = true;
this.zkCluster = zkCluster;
conf.setInt(HConstants.ZOOKEEPER_CLIENT_PORT, zkCluster.getClientPort());
}
public MiniDFSCluster getDFSCluster() {
return dfsCluster;
}
public void setDFSCluster(MiniDFSCluster cluster) throws IOException {
if (dfsCluster != null && dfsCluster.isClusterUp()) {
throw new IOException("DFSCluster is already running! Shut it down first.");
}
this.dfsCluster = cluster;
}
public FileSystem getTestFileSystem() throws IOException {
return HFileSystem.get(conf);
}
public void waitTableAvailable(byte[] table, long timeoutMillis)
throws InterruptedException, IOException {
long startWait = System.currentTimeMillis();
while (!getHBaseAdmin().isTableAvailable(table)) {
assertTrue("Timed out waiting for table to become available " +
Bytes.toStringBinary(table),
System.currentTimeMillis() - startWait < timeoutMillis);
Thread.sleep(200);
}
}
public void waitTableEnabled(byte[] table, long timeoutMillis)
throws InterruptedException, IOException {
long startWait = System.currentTimeMillis();
while (!getHBaseAdmin().isTableAvailable(table) &&
!getHBaseAdmin().isTableEnabled(table)) {
assertTrue("Timed out waiting for table to become available and enabled " +
Bytes.toStringBinary(table),
System.currentTimeMillis() - startWait < timeoutMillis);
Thread.sleep(200);
}
}
/**
* Make sure that at least the specified number of region servers
* are running
* @param num minimum number of region servers that should be running
* @return true if we started some servers
* @throws IOException
*/
public boolean ensureSomeRegionServersAvailable(final int num)
throws IOException {
boolean startedServer = false;
MiniHBaseCluster hbaseCluster = getMiniHBaseCluster();
for (int i=hbaseCluster.getLiveRegionServerThreads().size(); i<num; ++i) {
LOG.info("Started new server=" + hbaseCluster.startRegionServer());
startedServer = true;
}
return startedServer;
}
/**
* Make sure that at least the specified number of region servers
* are running. We don't count the ones that are currently stopping or are
* stopped.
* @param num minimum number of region servers that should be running
* @return true if we started some servers
* @throws IOException
*/
public boolean ensureSomeNonStoppedRegionServersAvailable(final int num)
throws IOException {
boolean startedServer = ensureSomeRegionServersAvailable(num);
for (JVMClusterUtil.RegionServerThread rst :
getMiniHBaseCluster().getRegionServerThreads()) {
HRegionServer hrs = rst.getRegionServer();
if (hrs.isStopping() || hrs.isStopped()) {
LOG.info("A region server is stopped or stopping:"+hrs);
LOG.info("Started new server=" + getMiniHBaseCluster().startRegionServer());
startedServer = true;
}
}
return startedServer;
}
/**
* This method clones the passed <code>c</code> configuration setting a new
* user into the clone. Use it getting new instances of FileSystem. Only
* works for DistributedFileSystem.
* @param c Initial configuration
* @param differentiatingSuffix Suffix to differentiate this user from others.
* @return A new configuration instance with a different user set into it.
* @throws IOException
*/
public static User getDifferentUser(final Configuration c,
final String differentiatingSuffix)
throws IOException {
FileSystem currentfs = FileSystem.get(c);
if (!(currentfs instanceof DistributedFileSystem)) {
return User.getCurrent();
}
// Else distributed filesystem. Make a new instance per daemon. Below
// code is taken from the AppendTestUtil over in hdfs.
String username = User.getCurrent().getName() +
differentiatingSuffix;
User user = User.createUserForTesting(c, username,
new String[]{"supergroup"});
return user;
}
/**
* Set maxRecoveryErrorCount in DFSClient. In 0.20 pre-append its hard-coded to 5 and
* makes tests linger. Here is the exception you'll see:
* <pre>
* 2010-06-15 11:52:28,511 WARN [DataStreamer for file /hbase/.logs/hlog.1276627923013 block blk_928005470262850423_1021] hdfs.DFSClient$DFSOutputStream(2657): Error Recovery for block blk_928005470262850423_1021 failed because recovery from primary datanode 127.0.0.1:53683 failed 4 times. Pipeline was 127.0.0.1:53687, 127.0.0.1:53683. Will retry...
* </pre>
* @param stream A DFSClient.DFSOutputStream.
* @param max
* @throws NoSuchFieldException
* @throws SecurityException
* @throws IllegalAccessException
* @throws IllegalArgumentException
*/
public static void setMaxRecoveryErrorCount(final OutputStream stream,
final int max) {
try {
Class<?> [] clazzes = DFSClient.class.getDeclaredClasses();
for (Class<?> clazz: clazzes) {
String className = clazz.getSimpleName();
if (className.equals("DFSOutputStream")) {
if (clazz.isInstance(stream)) {
Field maxRecoveryErrorCountField =
stream.getClass().getDeclaredField("maxRecoveryErrorCount");
maxRecoveryErrorCountField.setAccessible(true);
maxRecoveryErrorCountField.setInt(stream, max);
break;
}
}
}
} catch (Exception e) {
LOG.info("Could not set max recovery field", e);
}
}
/**
* Wait until <code>countOfRegion</code> in .META. have a non-empty
* info:server. This means all regions have been deployed, master has been
* informed and updated .META. with the regions deployed server.
* @param countOfRegions How many regions in .META.
* @throws IOException
*/
public void waitUntilAllRegionsAssigned(final int countOfRegions)
throws IOException {
HTable meta = new HTable(getConfiguration(), HConstants.META_TABLE_NAME);
while (true) {
int rows = 0;
Scan scan = new Scan();
scan.addColumn(HConstants.CATALOG_FAMILY, HConstants.SERVER_QUALIFIER);
ResultScanner s = meta.getScanner(scan);
for (Result r = null; (r = s.next()) != null;) {
byte [] b =
r.getValue(HConstants.CATALOG_FAMILY, HConstants.SERVER_QUALIFIER);
if (b == null || b.length <= 0) {
break;
}
rows++;
}
s.close();
// If I get to here and all rows have a Server, then all have been assigned.
if (rows == countOfRegions) {
break;
}
LOG.info("Found=" + rows);
Threads.sleep(200);
}
}
/**
* Do a small get/scan against one store. This is required because store
* has no actual methods of querying itself, and relies on StoreScanner.
*/
public static List<KeyValue> getFromStoreFile(HStore store,
Get get) throws IOException {
MultiVersionConsistencyControl.resetThreadReadPoint();
Scan scan = new Scan(get);
InternalScanner scanner = (InternalScanner) store.getScanner(scan,
scan.getFamilyMap().get(store.getFamily().getName()));
List<KeyValue> result = new ArrayList<KeyValue>();
scanner.next(result);
if (!result.isEmpty()) {
// verify that we are on the row we want:
KeyValue kv = result.get(0);
if (!Bytes.equals(kv.getRow(), get.getRow())) {
result.clear();
}
}
scanner.close();
return result;
}
/**
* Do a small get/scan against one store. This is required because store
* has no actual methods of querying itself, and relies on StoreScanner.
*/
public static List<KeyValue> getFromStoreFile(HStore store,
byte [] row,
NavigableSet<byte[]> columns
) throws IOException {
Get get = new Get(row);
Map<byte[], NavigableSet<byte[]>> s = get.getFamilyMap();
s.put(store.getFamily().getName(), columns);
return getFromStoreFile(store,get);
}
/**
* Gets a ZooKeeperWatcher.
* @param TEST_UTIL
*/
public static ZooKeeperWatcher getZooKeeperWatcher(
HBaseTestingUtility TEST_UTIL) throws ZooKeeperConnectionException,
IOException {
ZooKeeperWatcher zkw = new ZooKeeperWatcher(TEST_UTIL.getConfiguration(),
"unittest", new Abortable() {
boolean aborted = false;
@Override
public void abort(String why, Throwable e) {
aborted = true;
throw new RuntimeException("Fatal ZK error, why=" + why, e);
}
@Override
public boolean isAborted() {
return aborted;
}
});
return zkw;
}
/**
* Creates a znode with OPENED state.
* @param TEST_UTIL
* @param region
* @param serverName
* @return
* @throws IOException
* @throws ZooKeeperConnectionException
* @throws KeeperException
* @throws NodeExistsException
*/
public static ZooKeeperWatcher createAndForceNodeToOpenedState(
HBaseTestingUtility TEST_UTIL, HRegion region,
ServerName serverName) throws ZooKeeperConnectionException,
IOException, KeeperException, NodeExistsException {
ZooKeeperWatcher zkw = getZooKeeperWatcher(TEST_UTIL);
ZKAssign.createNodeOffline(zkw, region.getRegionInfo(), serverName);
int version = ZKAssign.transitionNodeOpening(zkw, region
.getRegionInfo(), serverName);
ZKAssign.transitionNodeOpened(zkw, region.getRegionInfo(), serverName,
version);
return zkw;
}
public static void assertKVListsEqual(String additionalMsg,
final List<KeyValue> expected,
final List<KeyValue> actual) {
final int eLen = expected.size();
final int aLen = actual.size();
final int minLen = Math.min(eLen, aLen);
int i;
for (i = 0; i < minLen
&& KeyValue.COMPARATOR.compare(expected.get(i), actual.get(i)) == 0;
++i) {}
if (additionalMsg == null) {
additionalMsg = "";
}
if (!additionalMsg.isEmpty()) {
additionalMsg = ". " + additionalMsg;
}
if (eLen != aLen || i != minLen) {
throw new AssertionError(
"Expected and actual KV arrays differ at position " + i + ": " +
safeGetAsStr(expected, i) + " (length " + eLen +") vs. " +
safeGetAsStr(actual, i) + " (length " + aLen + ")" + additionalMsg);
}
}
private static <T> String safeGetAsStr(List<T> lst, int i) {
if (0 <= i && i < lst.size()) {
return lst.get(i).toString();
} else {
return "<out_of_range>";
}
}
public String getClusterKey() {
return conf.get(HConstants.ZOOKEEPER_QUORUM) + ":"
+ conf.get(HConstants.ZOOKEEPER_CLIENT_PORT) + ":"
+ conf.get(HConstants.ZOOKEEPER_ZNODE_PARENT,
HConstants.DEFAULT_ZOOKEEPER_ZNODE_PARENT);
}
/** Creates a random table with the given parameters */
public HTable createRandomTable(String tableName,
final Collection<String> families,
final int maxVersions,
final int numColsPerRow,
final int numFlushes,
final int numRegions,
final int numRowsPerFlush)
throws IOException, InterruptedException {
LOG.info("\n\nCreating random table " + tableName + " with " + numRegions +
" regions, " + numFlushes + " storefiles per region, " +
numRowsPerFlush + " rows per flush, maxVersions=" + maxVersions +
"\n");
final Random rand = new Random(tableName.hashCode() * 17L + 12938197137L);
final int numCF = families.size();
final byte[][] cfBytes = new byte[numCF][];
final byte[] tableNameBytes = Bytes.toBytes(tableName);
{
int cfIndex = 0;
for (String cf : families) {
cfBytes[cfIndex++] = Bytes.toBytes(cf);
}
}
final int actualStartKey = 0;
final int actualEndKey = Integer.MAX_VALUE;
final int keysPerRegion = (actualEndKey - actualStartKey) / numRegions;
final int splitStartKey = actualStartKey + keysPerRegion;
final int splitEndKey = actualEndKey - keysPerRegion;
final String keyFormat = "%08x";
final HTable table = createTable(tableNameBytes, cfBytes,
maxVersions,
Bytes.toBytes(String.format(keyFormat, splitStartKey)),
Bytes.toBytes(String.format(keyFormat, splitEndKey)),
numRegions);
if (hbaseCluster != null) {
getMiniHBaseCluster().flushcache(HConstants.META_TABLE_NAME);
}
for (int iFlush = 0; iFlush < numFlushes; ++iFlush) {
for (int iRow = 0; iRow < numRowsPerFlush; ++iRow) {
final byte[] row = Bytes.toBytes(String.format(keyFormat,
actualStartKey + rand.nextInt(actualEndKey - actualStartKey)));
Put put = new Put(row);
Delete del = new Delete(row);
for (int iCol = 0; iCol < numColsPerRow; ++iCol) {
final byte[] cf = cfBytes[rand.nextInt(numCF)];
final long ts = rand.nextInt();
final byte[] qual = Bytes.toBytes("col" + iCol);
if (rand.nextBoolean()) {
final byte[] value = Bytes.toBytes("value_for_row_" + iRow +
"_cf_" + Bytes.toStringBinary(cf) + "_col_" + iCol + "_ts_" +
ts + "_random_" + rand.nextLong());
put.add(cf, qual, ts, value);
} else if (rand.nextDouble() < 0.8) {
del.deleteColumn(cf, qual, ts);
} else {
del.deleteColumns(cf, qual, ts);
}
}
if (!put.isEmpty()) {
table.put(put);
}
if (!del.isEmpty()) {
table.delete(del);
}
}
LOG.info("Initiating flush #" + iFlush + " for table " + tableName);
table.flushCommits();
if (hbaseCluster != null) {
getMiniHBaseCluster().flushcache(tableNameBytes);
}
}
return table;
}
private static final int MIN_RANDOM_PORT = 0xc000;
private static final int MAX_RANDOM_PORT = 0xfffe;
/**
* Returns a random port. These ports cannot be registered with IANA and are
* intended for dynamic allocation (see http://bit.ly/dynports).
*/
public static int randomPort() {
return MIN_RANDOM_PORT
+ new Random().nextInt(MAX_RANDOM_PORT - MIN_RANDOM_PORT);
}
/**
* Returns a random free port and marks that port as taken. Not thread-safe. Expected to be
* called from single-threaded test setup code/
*/
public static int randomFreePort() {
int port = 0;
do {
port = randomPort();
if (takenRandomPorts.contains(port)) {
continue;
}
takenRandomPorts.add(port);
try {
ServerSocket sock = new ServerSocket(port);
sock.close();
} catch (IOException ex) {
port = 0;
}
} while (port == 0);
return port;
}
public static void waitForHostPort(String host, int port)
throws IOException {
final int maxTimeMs = 10000;
final int maxNumAttempts = maxTimeMs / HConstants.SOCKET_RETRY_WAIT_MS;
IOException savedException = null;
LOG.info("Waiting for server at " + host + ":" + port);
for (int attempt = 0; attempt < maxNumAttempts; ++attempt) {
try {
Socket sock = new Socket(InetAddress.getByName(host), port);
sock.close();
savedException = null;
LOG.info("Server at " + host + ":" + port + " is available");
break;
} catch (UnknownHostException e) {
throw new IOException("Failed to look up " + host, e);
} catch (IOException e) {
savedException = e;
}
Threads.sleepWithoutInterrupt(HConstants.SOCKET_RETRY_WAIT_MS);
}
if (savedException != null) {
throw savedException;
}
}
/**
* Creates a pre-split table for load testing. If the table already exists,
* logs a warning and continues.
* @return the number of regions the table was split into
*/
public static int createPreSplitLoadTestTable(Configuration conf,
byte[] tableName, byte[] columnFamily, Algorithm compression,
DataBlockEncoding dataBlockEncoding) throws IOException {
HTableDescriptor desc = new HTableDescriptor(tableName);
HColumnDescriptor hcd = new HColumnDescriptor(columnFamily);
hcd.setDataBlockEncoding(dataBlockEncoding);
hcd.setCompressionType(compression);
desc.addFamily(hcd);
int totalNumberOfRegions = 0;
try {
HBaseAdmin admin = new HBaseAdmin(conf);
// create a table a pre-splits regions.
// The number of splits is set as:
// region servers * regions per region server).
int numberOfServers = admin.getClusterStatus().getServers().size();
if (numberOfServers == 0) {
throw new IllegalStateException("No live regionservers");
}
totalNumberOfRegions = numberOfServers * DEFAULT_REGIONS_PER_SERVER;
LOG.info("Number of live regionservers: " + numberOfServers + ", " +
"pre-splitting table into " + totalNumberOfRegions + " regions " +
"(default regions per server: " + DEFAULT_REGIONS_PER_SERVER + ")");
byte[][] splits = new RegionSplitter.HexStringSplit().split(
totalNumberOfRegions);
admin.createTable(desc, splits);
admin.close();
} catch (MasterNotRunningException e) {
LOG.error("Master not running", e);
throw new IOException(e);
} catch (TableExistsException e) {
LOG.warn("Table " + Bytes.toStringBinary(tableName) +
" already exists, continuing");
}
return totalNumberOfRegions;
}
public static int getMetaRSPort(Configuration conf) throws IOException {
HTable table = new HTable(conf, HConstants.META_TABLE_NAME);
HRegionLocation hloc = table.getRegionLocation(Bytes.toBytes(""));
table.close();
return hloc.getPort();
}
/**
* Due to async racing issue, a region may not be in
* the online region list of a region server yet, after
* the assignment znode is deleted and the new assignment
* is recorded in master.
*/
public void assertRegionOnServer(
final HRegionInfo hri, final ServerName server,
final long timeout) throws IOException, InterruptedException {
long timeoutTime = System.currentTimeMillis() + timeout;
while (true) {
List<HRegionInfo> regions = getHBaseAdmin().getOnlineRegions(server);
if (regions.contains(hri)) return;
long now = System.currentTimeMillis();
if (now > timeoutTime) break;
Thread.sleep(10);
}
fail("Could not find region " + hri.getRegionNameAsString()
+ " on server " + server);
}
public HRegion createTestRegion(String tableName, HColumnDescriptor hcd)
throws IOException {
HTableDescriptor htd = new HTableDescriptor(tableName);
htd.addFamily(hcd);
HRegionInfo info =
new HRegionInfo(Bytes.toBytes(tableName), null, null, false);
HRegion region =
HRegion.createHRegion(info, getDataTestDir(), getConfiguration(), htd);
return region;
}
public void setFileSystemURI(String fsURI) {
FS_URI = fsURI;
}
}