/**
*
* 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.client;
import static org.apache.hadoop.hbase.client.ConnectionUtils.NO_NONCE_GENERATOR;
import static org.apache.hadoop.hbase.client.ConnectionUtils.getStubKey;
import static org.apache.hadoop.hbase.client.ConnectionUtils.retries2Attempts;
import static org.apache.hadoop.hbase.client.MetricsConnection.CLIENT_SIDE_METRICS_ENABLED_KEY;
import static org.apache.hadoop.hbase.util.CollectionUtils.computeIfAbsent;
import static org.apache.hadoop.hbase.util.CollectionUtils.computeIfAbsentEx;
import java.io.Closeable;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.lang.reflect.UndeclaredThrowableException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.CallQueueTooBigException;
import org.apache.hadoop.hbase.DoNotRetryIOException;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HRegionLocation;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.MetaTableAccessor;
import org.apache.hadoop.hbase.RegionLocations;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.TableNotEnabledException;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.client.backoff.ClientBackoffPolicy;
import org.apache.hadoop.hbase.client.backoff.ClientBackoffPolicyFactory;
import org.apache.hadoop.hbase.exceptions.ClientExceptionsUtil;
import org.apache.hadoop.hbase.exceptions.RegionMovedException;
import org.apache.hadoop.hbase.ipc.RpcClient;
import org.apache.hadoop.hbase.ipc.RpcClientFactory;
import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
import org.apache.hadoop.hbase.regionserver.RegionServerStoppedException;
import org.apache.hadoop.hbase.security.User;
import org.apache.hadoop.hbase.shaded.com.google.protobuf.BlockingRpcChannel;
import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcController;
import org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException;
import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;
import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService.BlockingInterface;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.DrainRegionServersRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.DrainRegionServersResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsBalancerEnabledRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsBalancerEnabledResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsNormalizerEnabledRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.IsNormalizerEnabledResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ListDrainingRegionServersRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ListDrainingRegionServersResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.NormalizeRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.NormalizeResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.RemoveDrainFromRegionServersRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.RemoveDrainFromRegionServersResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.SecurityCapabilitiesRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.SecurityCapabilitiesResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.SetNormalizerRunningRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.SetNormalizerRunningResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.AddReplicationPeerRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.AddReplicationPeerResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.DisableReplicationPeerRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.DisableReplicationPeerResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.EnableReplicationPeerRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.EnableReplicationPeerResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.GetReplicationPeerConfigRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.GetReplicationPeerConfigResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.ListReplicationPeersRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.ListReplicationPeersResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.RemoveReplicationPeerRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.RemoveReplicationPeerResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.UpdateReplicationPeerConfigRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ReplicationProtos.UpdateReplicationPeerConfigResponse;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.ExceptionUtil;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.hadoop.hbase.util.ReflectionUtils;
import org.apache.hadoop.hbase.util.Threads;
import org.apache.hadoop.hbase.zookeeper.MasterAddressTracker;
import org.apache.hadoop.hbase.zookeeper.ZKUtil;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.zookeeper.KeeperException;
import com.google.common.annotations.VisibleForTesting;
import edu.umd.cs.findbugs.annotations.Nullable;
/**
* Main implementation of {@link Connection} and {@link ClusterConnection} interfaces.
* Encapsulates connection to zookeeper and regionservers.
*/
@edu.umd.cs.findbugs.annotations.SuppressWarnings(
value="AT_OPERATION_SEQUENCE_ON_CONCURRENT_ABSTRACTION",
justification="Access to the conncurrent hash map is under a lock so should be fine.")
@InterfaceAudience.Private
class ConnectionImplementation implements ClusterConnection, Closeable {
public static final String RETRIES_BY_SERVER_KEY = "hbase.client.retries.by.server";
private static final Log LOG = LogFactory.getLog(ConnectionImplementation.class);
private static final String RESOLVE_HOSTNAME_ON_FAIL_KEY = "hbase.resolve.hostnames.on.failure";
private final boolean hostnamesCanChange;
private final long pause;
private final long pauseForCQTBE;// pause for CallQueueTooBigException, if specified
private boolean useMetaReplicas;
private final int metaReplicaCallTimeoutScanInMicroSecond;
private final int numTries;
final int rpcTimeout;
/**
* Global nonceGenerator shared per client.Currently there's no reason to limit its scope.
* Once it's set under nonceGeneratorCreateLock, it is never unset or changed.
*/
private static volatile NonceGenerator nonceGenerator = null;
/** The nonce generator lock. Only taken when creating Connection, which gets a private copy. */
private static final Object nonceGeneratorCreateLock = new Object();
private final AsyncProcess asyncProcess;
// single tracker per connection
private final ServerStatisticTracker stats;
private volatile boolean closed;
private volatile boolean aborted;
// package protected for the tests
ClusterStatusListener clusterStatusListener;
private final Object metaRegionLock = new Object();
// We have a single lock for master & zk to prevent deadlocks. Having
// one lock for ZK and one lock for master is not possible:
// When creating a connection to master, we need a connection to ZK to get
// its address. But another thread could have taken the ZK lock, and could
// be waiting for the master lock => deadlock.
private final Object masterAndZKLock = new Object();
// thread executor shared by all Table instances created
// by this connection
private volatile ExecutorService batchPool = null;
// meta thread executor shared by all Table instances created
// by this connection
private volatile ExecutorService metaLookupPool = null;
private volatile boolean cleanupPool = false;
private final Configuration conf;
// cache the configuration value for tables so that we can avoid calling
// the expensive Configuration to fetch the value multiple times.
private final ConnectionConfiguration connectionConfig;
// Client rpc instance.
private final RpcClient rpcClient;
private final MetaCache metaCache;
private final MetricsConnection metrics;
protected User user;
private final RpcRetryingCallerFactory rpcCallerFactory;
private final RpcControllerFactory rpcControllerFactory;
private final RetryingCallerInterceptor interceptor;
/**
* Cluster registry of basic info such as clusterid and meta region location.
*/
Registry registry;
private final ClientBackoffPolicy backoffPolicy;
/**
* Allow setting an alternate BufferedMutator implementation via
* config. If null, use default.
*/
private final String alternateBufferedMutatorClassName;
/**
* constructor
* @param conf Configuration object
*/
ConnectionImplementation(Configuration conf,
ExecutorService pool, User user) throws IOException {
this.conf = conf;
this.user = user;
this.batchPool = pool;
this.connectionConfig = new ConnectionConfiguration(conf);
this.closed = false;
this.pause = conf.getLong(HConstants.HBASE_CLIENT_PAUSE,
HConstants.DEFAULT_HBASE_CLIENT_PAUSE);
long configuredPauseForCQTBE = conf.getLong(HConstants.HBASE_CLIENT_PAUSE_FOR_CQTBE, pause);
if (configuredPauseForCQTBE < pause) {
LOG.warn("The " + HConstants.HBASE_CLIENT_PAUSE_FOR_CQTBE + " setting: "
+ configuredPauseForCQTBE + " is smaller than " + HConstants.HBASE_CLIENT_PAUSE
+ ", will use " + pause + " instead.");
this.pauseForCQTBE = pause;
} else {
this.pauseForCQTBE = configuredPauseForCQTBE;
}
this.useMetaReplicas = conf.getBoolean(HConstants.USE_META_REPLICAS,
HConstants.DEFAULT_USE_META_REPLICAS);
this.metaReplicaCallTimeoutScanInMicroSecond =
connectionConfig.getMetaReplicaCallTimeoutMicroSecondScan();
// how many times to try, one more than max *retry* time
this.numTries = retries2Attempts(connectionConfig.getRetriesNumber());
this.rpcTimeout = conf.getInt(
HConstants.HBASE_RPC_TIMEOUT_KEY,
HConstants.DEFAULT_HBASE_RPC_TIMEOUT);
if (conf.getBoolean(NonceGenerator.CLIENT_NONCES_ENABLED_KEY, true)) {
synchronized (nonceGeneratorCreateLock) {
if (nonceGenerator == null) {
nonceGenerator = PerClientRandomNonceGenerator.get();
}
}
} else {
nonceGenerator = NO_NONCE_GENERATOR;
}
this.stats = ServerStatisticTracker.create(conf);
this.interceptor = (new RetryingCallerInterceptorFactory(conf)).build();
this.rpcControllerFactory = RpcControllerFactory.instantiate(conf);
this.rpcCallerFactory = RpcRetryingCallerFactory.instantiate(conf, interceptor, this.stats);
this.backoffPolicy = ClientBackoffPolicyFactory.create(conf);
this.asyncProcess = new AsyncProcess(this, conf, rpcCallerFactory, false, rpcControllerFactory);
if (conf.getBoolean(CLIENT_SIDE_METRICS_ENABLED_KEY, false)) {
this.metrics = new MetricsConnection(this);
} else {
this.metrics = null;
}
this.metaCache = new MetaCache(this.metrics);
boolean shouldListen = conf.getBoolean(HConstants.STATUS_PUBLISHED,
HConstants.STATUS_PUBLISHED_DEFAULT);
this.hostnamesCanChange = conf.getBoolean(RESOLVE_HOSTNAME_ON_FAIL_KEY, true);
Class<? extends ClusterStatusListener.Listener> listenerClass =
conf.getClass(ClusterStatusListener.STATUS_LISTENER_CLASS,
ClusterStatusListener.DEFAULT_STATUS_LISTENER_CLASS,
ClusterStatusListener.Listener.class);
// Is there an alternate BufferedMutator to use?
this.alternateBufferedMutatorClassName =
this.conf.get(BufferedMutator.CLASSNAME_KEY);
try {
this.registry = setupRegistry();
retrieveClusterId();
this.rpcClient = RpcClientFactory.createClient(this.conf, this.clusterId, this.metrics);
// Do we publish the status?
if (shouldListen) {
if (listenerClass == null) {
LOG.warn(HConstants.STATUS_PUBLISHED + " is true, but " +
ClusterStatusListener.STATUS_LISTENER_CLASS + " is not set - not listening status");
} else {
clusterStatusListener = new ClusterStatusListener(
new ClusterStatusListener.DeadServerHandler() {
@Override
public void newDead(ServerName sn) {
clearCaches(sn);
rpcClient.cancelConnections(sn);
}
}, conf, listenerClass);
}
}
} catch (Throwable e) {
// avoid leaks: registry, rpcClient, ...
LOG.debug("connection construction failed", e);
close();
throw e;
}
}
/**
* @param useMetaReplicas
*/
@VisibleForTesting
void setUseMetaReplicas(final boolean useMetaReplicas) {
this.useMetaReplicas = useMetaReplicas;
}
/**
* @param conn The connection for which to replace the generator.
* @param cnm Replaces the nonce generator used, for testing.
* @return old nonce generator.
*/
@VisibleForTesting
static NonceGenerator injectNonceGeneratorForTesting(
ClusterConnection conn, NonceGenerator cnm) {
ConnectionImplementation connImpl = (ConnectionImplementation)conn;
NonceGenerator ng = connImpl.getNonceGenerator();
LOG.warn("Nonce generator is being replaced by test code for "
+ cnm.getClass().getName());
nonceGenerator = cnm;
return ng;
}
@Override
public Table getTable(TableName tableName) throws IOException {
return getTable(tableName, getBatchPool());
}
@Override
public TableBuilder getTableBuilder(TableName tableName, ExecutorService pool) {
return new TableBuilderBase(tableName, connectionConfig) {
@Override
public Table build() {
return new HTable(ConnectionImplementation.this, this, rpcCallerFactory,
rpcControllerFactory, pool);
}
};
}
@Override
public BufferedMutator getBufferedMutator(BufferedMutatorParams params) {
if (params.getTableName() == null) {
throw new IllegalArgumentException("TableName cannot be null.");
}
if (params.getPool() == null) {
params.pool(HTable.getDefaultExecutor(getConfiguration()));
}
if (params.getWriteBufferSize() == BufferedMutatorParams.UNSET) {
params.writeBufferSize(connectionConfig.getWriteBufferSize());
}
if (params.getMaxKeyValueSize() == BufferedMutatorParams.UNSET) {
params.maxKeyValueSize(connectionConfig.getMaxKeyValueSize());
}
// Look to see if an alternate BufferedMutation implementation is wanted.
// Look in params and in config. If null, use default.
String implementationClassName = params.getImplementationClassName();
if (implementationClassName == null) {
implementationClassName = this.alternateBufferedMutatorClassName;
}
if (implementationClassName == null) {
return new BufferedMutatorImpl(this, rpcCallerFactory, rpcControllerFactory, params);
}
try {
return (BufferedMutator)ReflectionUtils.newInstance(Class.forName(implementationClassName),
this, rpcCallerFactory, rpcControllerFactory, params);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
@Override
public BufferedMutator getBufferedMutator(TableName tableName) {
return getBufferedMutator(new BufferedMutatorParams(tableName));
}
@Override
public RegionLocator getRegionLocator(TableName tableName) throws IOException {
return new HRegionLocator(tableName, this);
}
@Override
public Admin getAdmin() throws IOException {
return new HBaseAdmin(this);
}
@Override
public MetricsConnection getConnectionMetrics() {
return this.metrics;
}
private ExecutorService getBatchPool() {
if (batchPool == null) {
synchronized (this) {
if (batchPool == null) {
int threads = conf.getInt("hbase.hconnection.threads.max", 256);
this.batchPool = getThreadPool(threads, threads, "-shared", null);
this.cleanupPool = true;
}
}
}
return this.batchPool;
}
private ExecutorService getThreadPool(int maxThreads, int coreThreads, String nameHint,
BlockingQueue<Runnable> passedWorkQueue) {
// shared HTable thread executor not yet initialized
if (maxThreads == 0) {
maxThreads = Runtime.getRuntime().availableProcessors() * 8;
}
if (coreThreads == 0) {
coreThreads = Runtime.getRuntime().availableProcessors() * 8;
}
long keepAliveTime = conf.getLong("hbase.hconnection.threads.keepalivetime", 60);
BlockingQueue<Runnable> workQueue = passedWorkQueue;
if (workQueue == null) {
workQueue =
new LinkedBlockingQueue<>(maxThreads *
conf.getInt(HConstants.HBASE_CLIENT_MAX_TOTAL_TASKS,
HConstants.DEFAULT_HBASE_CLIENT_MAX_TOTAL_TASKS));
coreThreads = maxThreads;
}
ThreadPoolExecutor tpe = new ThreadPoolExecutor(
coreThreads,
maxThreads,
keepAliveTime,
TimeUnit.SECONDS,
workQueue,
Threads.newDaemonThreadFactory(toString() + nameHint));
tpe.allowCoreThreadTimeOut(true);
return tpe;
}
private ExecutorService getMetaLookupPool() {
if (this.metaLookupPool == null) {
synchronized (this) {
if (this.metaLookupPool == null) {
//Some of the threads would be used for meta replicas
//To start with, threads.max.core threads can hit the meta (including replicas).
//After that, requests will get queued up in the passed queue, and only after
//the queue is full, a new thread will be started
int threads = conf.getInt("hbase.hconnection.meta.lookup.threads.max", 128);
this.metaLookupPool = getThreadPool(
threads,
threads,
"-metaLookup-shared-", new LinkedBlockingQueue<>());
}
}
}
return this.metaLookupPool;
}
protected ExecutorService getCurrentMetaLookupPool() {
return metaLookupPool;
}
protected ExecutorService getCurrentBatchPool() {
return batchPool;
}
private void shutdownPools() {
if (this.cleanupPool && this.batchPool != null && !this.batchPool.isShutdown()) {
shutdownBatchPool(this.batchPool);
}
if (this.metaLookupPool != null && !this.metaLookupPool.isShutdown()) {
shutdownBatchPool(this.metaLookupPool);
}
}
private void shutdownBatchPool(ExecutorService pool) {
pool.shutdown();
try {
if (!pool.awaitTermination(10, TimeUnit.SECONDS)) {
pool.shutdownNow();
}
} catch (InterruptedException e) {
pool.shutdownNow();
}
}
/**
* @return The cluster registry implementation to use.
*/
private Registry setupRegistry() throws IOException {
return RegistryFactory.getRegistry(this);
}
/**
* For tests only.
*/
@VisibleForTesting
RpcClient getRpcClient() {
return rpcClient;
}
/**
* An identifier that will remain the same for a given connection.
*/
@Override
public String toString(){
return "hconnection-0x" + Integer.toHexString(hashCode());
}
protected String clusterId = null;
protected void retrieveClusterId() {
if (clusterId != null) {
return;
}
this.clusterId = this.registry.getClusterId();
if (clusterId == null) {
clusterId = HConstants.CLUSTER_ID_DEFAULT;
LOG.debug("clusterid came back null, using default " + clusterId);
}
}
@Override
public Configuration getConfiguration() {
return this.conf;
}
private void checkIfBaseNodeAvailable(ZooKeeperWatcher zkw)
throws MasterNotRunningException {
String errorMsg;
try {
if (ZKUtil.checkExists(zkw, zkw.znodePaths.baseZNode) == -1) {
errorMsg = "The node " + zkw.znodePaths.baseZNode+" is not in ZooKeeper. "
+ "It should have been written by the master. "
+ "Check the value configured in 'zookeeper.znode.parent'. "
+ "There could be a mismatch with the one configured in the master.";
LOG.error(errorMsg);
throw new MasterNotRunningException(errorMsg);
}
} catch (KeeperException e) {
errorMsg = "Can't get connection to ZooKeeper: " + e.getMessage();
LOG.error(errorMsg);
throw new MasterNotRunningException(errorMsg, e);
}
}
/**
* @return true if the master is running, throws an exception otherwise
* @throws org.apache.hadoop.hbase.MasterNotRunningException - if the master is not running
* @deprecated this has been deprecated without a replacement
*/
@Deprecated
@Override
public boolean isMasterRunning()
throws MasterNotRunningException, ZooKeeperConnectionException {
// When getting the master connection, we check it's running,
// so if there is no exception, it means we've been able to get a
// connection on a running master
MasterKeepAliveConnection m = getKeepAliveMasterService();
m.close();
return true;
}
@Override
public HRegionLocation getRegionLocation(final TableName tableName,
final byte [] row, boolean reload)
throws IOException {
return reload? relocateRegion(tableName, row): locateRegion(tableName, row);
}
@Override
public boolean isTableEnabled(TableName tableName) throws IOException {
return getTableState(tableName).inStates(TableState.State.ENABLED);
}
@Override
public boolean isTableDisabled(TableName tableName) throws IOException {
return getTableState(tableName).inStates(TableState.State.DISABLED);
}
@Override
public boolean isTableAvailable(final TableName tableName, @Nullable final byte[][] splitKeys)
throws IOException {
if (this.closed) {
throw new IOException(toString() + " closed");
}
try {
if (!isTableEnabled(tableName)) {
LOG.debug("Table " + tableName + " not enabled");
return false;
}
List<Pair<HRegionInfo, ServerName>> locations =
MetaTableAccessor.getTableRegionsAndLocations(this, tableName, true);
int notDeployed = 0;
int regionCount = 0;
for (Pair<HRegionInfo, ServerName> pair : locations) {
HRegionInfo info = pair.getFirst();
if (pair.getSecond() == null) {
if (LOG.isDebugEnabled()) {
LOG.debug("Table " + tableName + " has not deployed region " + pair.getFirst()
.getEncodedName());
}
notDeployed++;
} else if (splitKeys != null
&& !Bytes.equals(info.getStartKey(), HConstants.EMPTY_BYTE_ARRAY)) {
for (byte[] splitKey : splitKeys) {
// Just check if the splitkey is available
if (Bytes.equals(info.getStartKey(), splitKey)) {
regionCount++;
break;
}
}
} else {
// Always empty start row should be counted
regionCount++;
}
}
if (notDeployed > 0) {
if (LOG.isDebugEnabled()) {
LOG.debug("Table " + tableName + " has " + notDeployed + " regions");
}
return false;
} else if (splitKeys != null && regionCount != splitKeys.length + 1) {
if (LOG.isDebugEnabled()) {
LOG.debug("Table " + tableName + " expected to have " + (splitKeys.length + 1)
+ " regions, but only " + regionCount + " available");
}
return false;
} else {
if (LOG.isDebugEnabled()) {
LOG.debug("Table " + tableName + " should be available");
}
return true;
}
} catch (TableNotFoundException tnfe) {
LOG.warn("Table " + tableName + " not enabled, it is not exists");
return false;
}
}
@Override
public HRegionLocation locateRegion(final byte[] regionName) throws IOException {
RegionLocations locations = locateRegion(HRegionInfo.getTable(regionName),
HRegionInfo.getStartKey(regionName), false, true);
return locations == null ? null : locations.getRegionLocation();
}
@Override
public boolean isDeadServer(ServerName sn) {
if (clusterStatusListener == null) {
return false;
} else {
return clusterStatusListener.isDeadServer(sn);
}
}
@Override
public List<HRegionLocation> locateRegions(final TableName tableName)
throws IOException {
return locateRegions(tableName, false, true);
}
@Override
public List<HRegionLocation> locateRegions(final TableName tableName,
final boolean useCache, final boolean offlined) throws IOException {
List<HRegionInfo> regions = MetaTableAccessor
.getTableRegions(this, tableName, !offlined);
final List<HRegionLocation> locations = new ArrayList<>();
for (HRegionInfo regionInfo : regions) {
RegionLocations list = locateRegion(tableName, regionInfo.getStartKey(), useCache, true);
if (list != null) {
for (HRegionLocation loc : list.getRegionLocations()) {
if (loc != null) {
locations.add(loc);
}
}
}
}
return locations;
}
@Override
public HRegionLocation locateRegion(
final TableName tableName, final byte[] row) throws IOException{
RegionLocations locations = locateRegion(tableName, row, true, true);
return locations == null ? null : locations.getRegionLocation();
}
@Override
public HRegionLocation relocateRegion(final TableName tableName,
final byte [] row) throws IOException{
RegionLocations locations = relocateRegion(tableName, row,
RegionReplicaUtil.DEFAULT_REPLICA_ID);
return locations == null ? null :
locations.getRegionLocation(RegionReplicaUtil.DEFAULT_REPLICA_ID);
}
@Override
public RegionLocations relocateRegion(final TableName tableName,
final byte [] row, int replicaId) throws IOException{
// Since this is an explicit request not to use any caching, finding
// disabled tables should not be desirable. This will ensure that an exception is thrown when
// the first time a disabled table is interacted with.
if (!tableName.equals(TableName.META_TABLE_NAME) && isTableDisabled(tableName)) {
throw new TableNotEnabledException(tableName.getNameAsString() + " is disabled.");
}
return locateRegion(tableName, row, false, true, replicaId);
}
@Override
public RegionLocations locateRegion(final TableName tableName,
final byte [] row, boolean useCache, boolean retry)
throws IOException {
return locateRegion(tableName, row, useCache, retry, RegionReplicaUtil.DEFAULT_REPLICA_ID);
}
@Override
public RegionLocations locateRegion(final TableName tableName,
final byte [] row, boolean useCache, boolean retry, int replicaId)
throws IOException {
if (this.closed) {
throw new DoNotRetryIOException(toString() + " closed");
}
if (tableName== null || tableName.getName().length == 0) {
throw new IllegalArgumentException(
"table name cannot be null or zero length");
}
if (tableName.equals(TableName.META_TABLE_NAME)) {
return locateMeta(tableName, useCache, replicaId);
} else {
// Region not in the cache - have to go to the meta RS
return locateRegionInMeta(tableName, row, useCache, retry, replicaId);
}
}
private RegionLocations locateMeta(final TableName tableName,
boolean useCache, int replicaId) throws IOException {
// HBASE-10785: We cache the location of the META itself, so that we are not overloading
// zookeeper with one request for every region lookup. We cache the META with empty row
// key in MetaCache.
byte[] metaCacheKey = HConstants.EMPTY_START_ROW; // use byte[0] as the row for meta
RegionLocations locations = null;
if (useCache) {
locations = getCachedLocation(tableName, metaCacheKey);
if (locations != null && locations.getRegionLocation(replicaId) != null) {
return locations;
}
}
// only one thread should do the lookup.
synchronized (metaRegionLock) {
// Check the cache again for a hit in case some other thread made the
// same query while we were waiting on the lock.
if (useCache) {
locations = getCachedLocation(tableName, metaCacheKey);
if (locations != null && locations.getRegionLocation(replicaId) != null) {
return locations;
}
}
// Look up from zookeeper
locations = this.registry.getMetaRegionLocation();
if (locations != null) {
cacheLocation(tableName, locations);
}
}
return locations;
}
/*
* Search the hbase:meta table for the HRegionLocation
* info that contains the table and row we're seeking.
*/
private RegionLocations locateRegionInMeta(TableName tableName, byte[] row,
boolean useCache, boolean retry, int replicaId) throws IOException {
// If we are supposed to be using the cache, look in the cache to see if
// we already have the region.
if (useCache) {
RegionLocations locations = getCachedLocation(tableName, row);
if (locations != null && locations.getRegionLocation(replicaId) != null) {
return locations;
}
}
// build the key of the meta region we should be looking for.
// the extra 9's on the end are necessary to allow "exact" matches
// without knowing the precise region names.
byte[] metaKey = HRegionInfo.createRegionName(tableName, row, HConstants.NINES, false);
Scan s = new Scan();
s.setReversed(true);
s.withStartRow(metaKey);
s.addFamily(HConstants.CATALOG_FAMILY);
s.setOneRowLimit();
if (this.useMetaReplicas) {
s.setConsistency(Consistency.TIMELINE);
}
int maxAttempts = (retry ? numTries : 1);
for (int tries = 0; true; tries++) {
if (tries >= maxAttempts) {
throw new NoServerForRegionException("Unable to find region for "
+ Bytes.toStringBinary(row) + " in " + tableName +
" after " + tries + " tries.");
}
if (useCache) {
RegionLocations locations = getCachedLocation(tableName, row);
if (locations != null && locations.getRegionLocation(replicaId) != null) {
return locations;
}
} else {
// If we are not supposed to be using the cache, delete any existing cached location
// so it won't interfere.
metaCache.clearCache(tableName, row);
}
// Query the meta region
long pauseBase = this.pause;
try {
Result regionInfoRow = null;
s.resetMvccReadPoint();
try (ReversedClientScanner rcs =
new ReversedClientScanner(conf, s, TableName.META_TABLE_NAME, this, rpcCallerFactory,
rpcControllerFactory, getMetaLookupPool(), metaReplicaCallTimeoutScanInMicroSecond)) {
regionInfoRow = rcs.next();
}
if (regionInfoRow == null) {
throw new TableNotFoundException(tableName);
}
// convert the row result into the HRegionLocation we need!
RegionLocations locations = MetaTableAccessor.getRegionLocations(regionInfoRow);
if (locations == null || locations.getRegionLocation(replicaId) == null) {
throw new IOException("HRegionInfo was null in " +
tableName + ", row=" + regionInfoRow);
}
HRegionInfo regionInfo = locations.getRegionLocation(replicaId).getRegionInfo();
if (regionInfo == null) {
throw new IOException("HRegionInfo was null or empty in " +
TableName.META_TABLE_NAME + ", row=" + regionInfoRow);
}
// possible we got a region of a different table...
if (!regionInfo.getTable().equals(tableName)) {
throw new TableNotFoundException(
"Table '" + tableName + "' was not found, got: " +
regionInfo.getTable() + ".");
}
if (regionInfo.isSplit()) {
throw new RegionOfflineException("the only available region for" +
" the required row is a split parent," +
" the daughters should be online soon: " +
regionInfo.getRegionNameAsString());
}
if (regionInfo.isOffline()) {
throw new RegionOfflineException("the region is offline, could" +
" be caused by a disable table call: " +
regionInfo.getRegionNameAsString());
}
ServerName serverName = locations.getRegionLocation(replicaId).getServerName();
if (serverName == null) {
throw new NoServerForRegionException("No server address listed " +
"in " + TableName.META_TABLE_NAME + " for region " +
regionInfo.getRegionNameAsString() + " containing row " +
Bytes.toStringBinary(row));
}
if (isDeadServer(serverName)){
throw new RegionServerStoppedException("hbase:meta says the region "+
regionInfo.getRegionNameAsString()+" is managed by the server " + serverName +
", but it is dead.");
}
// Instantiate the location
cacheLocation(tableName, locations);
return locations;
} catch (TableNotFoundException e) {
// if we got this error, probably means the table just plain doesn't
// exist. rethrow the error immediately. this should always be coming
// from the HTable constructor.
throw e;
} catch (IOException e) {
ExceptionUtil.rethrowIfInterrupt(e);
if (e instanceof RemoteException) {
e = ((RemoteException)e).unwrapRemoteException();
}
if (e instanceof CallQueueTooBigException) {
// Give a special check on CallQueueTooBigException, see #HBASE-17114
pauseBase = this.pauseForCQTBE;
}
if (tries < maxAttempts - 1) {
if (LOG.isDebugEnabled()) {
LOG.debug("locateRegionInMeta parentTable=" +
TableName.META_TABLE_NAME + ", metaLocation=" +
", attempt=" + tries + " of " +
maxAttempts + " failed; retrying after sleep of " +
ConnectionUtils.getPauseTime(pauseBase, tries) + " because: " + e.getMessage());
}
} else {
throw e;
}
// Only relocate the parent region if necessary
if(!(e instanceof RegionOfflineException ||
e instanceof NoServerForRegionException)) {
relocateRegion(TableName.META_TABLE_NAME, metaKey, replicaId);
}
}
try{
Thread.sleep(ConnectionUtils.getPauseTime(pauseBase, tries));
} catch (InterruptedException e) {
throw new InterruptedIOException("Giving up trying to location region in " +
"meta: thread is interrupted.");
}
}
}
/**
* Put a newly discovered HRegionLocation into the cache.
* @param tableName The table name.
* @param location the new location
*/
@Override
public void cacheLocation(final TableName tableName, final RegionLocations location) {
metaCache.cacheLocation(tableName, location);
}
/**
* Search the cache for a location that fits our table and row key.
* Return null if no suitable region is located.
* @return Null or region location found in cache.
*/
RegionLocations getCachedLocation(final TableName tableName,
final byte [] row) {
return metaCache.getCachedLocation(tableName, row);
}
public void clearRegionCache(final TableName tableName, byte[] row) {
metaCache.clearCache(tableName, row);
}
/*
* Delete all cached entries of a table that maps to a specific location.
*/
@Override
public void clearCaches(final ServerName serverName) {
metaCache.clearCache(serverName);
}
@Override
public void clearRegionCache() {
metaCache.clearCache();
}
@Override
public void clearRegionCache(final TableName tableName) {
metaCache.clearCache(tableName);
}
/**
* Put a newly discovered HRegionLocation into the cache.
* @param tableName The table name.
* @param source the source of the new location, if it's not coming from meta
* @param location the new location
*/
private void cacheLocation(final TableName tableName, final ServerName source,
final HRegionLocation location) {
metaCache.cacheLocation(tableName, source, location);
}
// Map keyed by service name + regionserver to service stub implementation
private final ConcurrentMap<String, Object> stubs = new ConcurrentHashMap<>();
/**
* State of the MasterService connection/setup.
*/
static class MasterServiceState {
Connection connection;
MasterProtos.MasterService.BlockingInterface stub;
int userCount;
MasterServiceState(final Connection connection) {
super();
this.connection = connection;
}
@Override
public String toString() {
return "MasterService";
}
Object getStub() {
return this.stub;
}
void clearStub() {
this.stub = null;
}
boolean isMasterRunning() throws IOException {
MasterProtos.IsMasterRunningResponse response = null;
try {
response = this.stub.isMasterRunning(null, RequestConverter.buildIsMasterRunningRequest());
} catch (Exception e) {
throw ProtobufUtil.handleRemoteException(e);
}
return response != null? response.getIsMasterRunning(): false;
}
}
/**
* The record of errors for servers.
*/
static class ServerErrorTracker {
// We need a concurrent map here, as we could have multiple threads updating it in parallel.
private final ConcurrentMap<ServerName, ServerErrors> errorsByServer = new ConcurrentHashMap<>();
private final long canRetryUntil;
private final int maxTries;// max number to try
private final long startTrackingTime;
/**
* Constructor
* @param timeout how long to wait before timeout, in unit of millisecond
* @param maxTries how many times to try
*/
public ServerErrorTracker(long timeout, int maxTries) {
this.maxTries = maxTries;
this.canRetryUntil = EnvironmentEdgeManager.currentTime() + timeout;
this.startTrackingTime = new Date().getTime();
}
/**
* We stop to retry when we have exhausted BOTH the number of tries and the time allocated.
* @param numAttempt how many times we have tried by now
*/
boolean canTryMore(int numAttempt) {
// If there is a single try we must not take into account the time.
return numAttempt < maxTries || (maxTries > 1 &&
EnvironmentEdgeManager.currentTime() < this.canRetryUntil);
}
/**
* Calculates the back-off time for a retrying request to a particular server.
*
* @param server The server in question.
* @param basePause The default hci pause.
* @return The time to wait before sending next request.
*/
long calculateBackoffTime(ServerName server, long basePause) {
long result;
ServerErrors errorStats = errorsByServer.get(server);
if (errorStats != null) {
result = ConnectionUtils.getPauseTime(basePause, Math.max(0, errorStats.getCount() - 1));
} else {
result = 0; // yes, if the server is not in our list we don't wait before retrying.
}
return result;
}
/**
* Reports that there was an error on the server to do whatever bean-counting necessary.
* @param server The server in question.
*/
void reportServerError(ServerName server) {
computeIfAbsent(errorsByServer, server, ServerErrors::new).addError();
}
long getStartTrackingTime() {
return startTrackingTime;
}
/**
* The record of errors for a server.
*/
private static class ServerErrors {
private final AtomicInteger retries = new AtomicInteger(0);
public int getCount() {
return retries.get();
}
public void addError() {
retries.incrementAndGet();
}
}
}
/**
* Class to make a MasterServiceStubMaker stub.
*/
private final class MasterServiceStubMaker {
private void isMasterRunning(MasterProtos.MasterService.BlockingInterface stub)
throws IOException {
try {
stub.isMasterRunning(null, RequestConverter.buildIsMasterRunningRequest());
} catch (ServiceException e) {
throw ProtobufUtil.handleRemoteException(e);
}
}
/**
* Create a stub. Try once only. It is not typed because there is no common type to protobuf
* services nor their interfaces. Let the caller do appropriate casting.
* @return A stub for master services.
*/
private MasterProtos.MasterService.BlockingInterface makeStubNoRetries()
throws IOException, KeeperException {
ZooKeeperKeepAliveConnection zkw;
try {
zkw = getKeepAliveZooKeeperWatcher();
} catch (IOException e) {
ExceptionUtil.rethrowIfInterrupt(e);
throw new ZooKeeperConnectionException("Can't connect to ZooKeeper", e);
}
try {
checkIfBaseNodeAvailable(zkw);
ServerName sn = MasterAddressTracker.getMasterAddress(zkw);
if (sn == null) {
String msg = "ZooKeeper available but no active master location found";
LOG.info(msg);
throw new MasterNotRunningException(msg);
}
if (isDeadServer(sn)) {
throw new MasterNotRunningException(sn + " is dead.");
}
// Use the security info interface name as our stub key
String key = getStubKey(MasterProtos.MasterService.getDescriptor().getName(), sn,
hostnamesCanChange);
MasterProtos.MasterService.BlockingInterface stub =
(MasterProtos.MasterService.BlockingInterface) computeIfAbsentEx(stubs, key, () -> {
BlockingRpcChannel channel = rpcClient.createBlockingRpcChannel(sn, user, rpcTimeout);
return MasterProtos.MasterService.newBlockingStub(channel);
});
isMasterRunning(stub);
return stub;
} finally {
zkw.close();
}
}
/**
* Create a stub against the master. Retry if necessary.
* @return A stub to do <code>intf</code> against the master
* @throws org.apache.hadoop.hbase.MasterNotRunningException if master is not running
*/
MasterProtos.MasterService.BlockingInterface makeStub() throws IOException {
// The lock must be at the beginning to prevent multiple master creations
// (and leaks) in a multithread context
synchronized (masterAndZKLock) {
Exception exceptionCaught = null;
if (!closed) {
try {
return makeStubNoRetries();
} catch (IOException e) {
exceptionCaught = e;
} catch (KeeperException e) {
exceptionCaught = e;
}
throw new MasterNotRunningException(exceptionCaught);
} else {
throw new DoNotRetryIOException("Connection was closed while trying to get master");
}
}
}
}
@Override
public AdminProtos.AdminService.BlockingInterface getAdmin(ServerName serverName)
throws IOException {
if (isDeadServer(serverName)) {
throw new RegionServerStoppedException(serverName + " is dead.");
}
String key = getStubKey(AdminProtos.AdminService.BlockingInterface.class.getName(), serverName,
this.hostnamesCanChange);
return (AdminProtos.AdminService.BlockingInterface) computeIfAbsentEx(stubs, key, () -> {
BlockingRpcChannel channel =
this.rpcClient.createBlockingRpcChannel(serverName, user, rpcTimeout);
return AdminProtos.AdminService.newBlockingStub(channel);
});
}
@Override
public BlockingInterface getClient(ServerName serverName) throws IOException {
if (isDeadServer(serverName)) {
throw new RegionServerStoppedException(serverName + " is dead.");
}
String key = getStubKey(ClientProtos.ClientService.BlockingInterface.class.getName(),
serverName, this.hostnamesCanChange);
return (ClientProtos.ClientService.BlockingInterface) computeIfAbsentEx(stubs, key, () -> {
BlockingRpcChannel channel =
this.rpcClient.createBlockingRpcChannel(serverName, user, rpcTimeout);
return ClientProtos.ClientService.newBlockingStub(channel);
});
}
private ZooKeeperKeepAliveConnection keepAliveZookeeper;
private AtomicInteger keepAliveZookeeperUserCount = new AtomicInteger(0);
/**
* Retrieve a shared ZooKeeperWatcher. You must close it it once you've have finished with it.
* @return The shared instance. Never returns null.
*/
ZooKeeperKeepAliveConnection getKeepAliveZooKeeperWatcher()
throws IOException {
synchronized (masterAndZKLock) {
if (keepAliveZookeeper == null) {
if (this.closed) {
throw new IOException(toString() + " closed");
}
// We don't check that our link to ZooKeeper is still valid
// But there is a retry mechanism in the ZooKeeperWatcher itself
keepAliveZookeeper = new ZooKeeperKeepAliveConnection(conf, this.toString(), this);
}
keepAliveZookeeperUserCount.addAndGet(1);
return keepAliveZookeeper;
}
}
void releaseZooKeeperWatcher(final ZooKeeperWatcher zkw) {
if (zkw == null){
return;
}
}
private void closeZooKeeperWatcher() {
synchronized (masterAndZKLock) {
if (keepAliveZookeeper != null) {
LOG.info("Closing zookeeper sessionid=0x" +
Long.toHexString(
keepAliveZookeeper.getRecoverableZooKeeper().getSessionId()));
keepAliveZookeeper.internalClose();
keepAliveZookeeper = null;
}
keepAliveZookeeperUserCount.set(0);
}
}
final MasterServiceState masterServiceState = new MasterServiceState(this);
@Override
public MasterProtos.MasterService.BlockingInterface getMaster() throws MasterNotRunningException {
return getKeepAliveMasterService();
}
private void resetMasterServiceState(final MasterServiceState mss) {
mss.userCount++;
}
@Override
public MasterKeepAliveConnection getKeepAliveMasterService()
throws MasterNotRunningException {
synchronized (masterAndZKLock) {
if (!isKeepAliveMasterConnectedAndRunning(this.masterServiceState)) {
MasterServiceStubMaker stubMaker = new MasterServiceStubMaker();
try {
this.masterServiceState.stub = stubMaker.makeStub();
} catch (MasterNotRunningException ex) {
throw ex;
} catch (IOException e) {
// rethrow as MasterNotRunningException so that we can keep the method sig
throw new MasterNotRunningException(e);
}
}
resetMasterServiceState(this.masterServiceState);
}
// Ugly delegation just so we can add in a Close method.
final MasterProtos.MasterService.BlockingInterface stub = this.masterServiceState.stub;
return new MasterKeepAliveConnection() {
MasterServiceState mss = masterServiceState;
@Override
public MasterProtos.AbortProcedureResponse abortProcedure(
RpcController controller,
MasterProtos.AbortProcedureRequest request) throws ServiceException {
return stub.abortProcedure(controller, request);
}
@Override
public MasterProtos.ListProceduresResponse listProcedures(
RpcController controller,
MasterProtos.ListProceduresRequest request) throws ServiceException {
return stub.listProcedures(controller, request);
}
@Override
public MasterProtos.ListLocksResponse listLocks(
RpcController controller,
MasterProtos.ListLocksRequest request) throws ServiceException {
return stub.listLocks(controller, request);
}
@Override
public MasterProtos.AddColumnResponse addColumn(
RpcController controller,
MasterProtos.AddColumnRequest request) throws ServiceException {
return stub.addColumn(controller, request);
}
@Override
public MasterProtos.DeleteColumnResponse deleteColumn(RpcController controller,
MasterProtos.DeleteColumnRequest request)
throws ServiceException {
return stub.deleteColumn(controller, request);
}
@Override
public MasterProtos.ModifyColumnResponse modifyColumn(RpcController controller,
MasterProtos.ModifyColumnRequest request)
throws ServiceException {
return stub.modifyColumn(controller, request);
}
@Override
public MasterProtos.MoveRegionResponse moveRegion(RpcController controller,
MasterProtos.MoveRegionRequest request) throws ServiceException {
return stub.moveRegion(controller, request);
}
@Override
public MasterProtos.MergeTableRegionsResponse mergeTableRegions(
RpcController controller, MasterProtos.MergeTableRegionsRequest request)
throws ServiceException {
return stub.mergeTableRegions(controller, request);
}
@Override
public MasterProtos.AssignRegionResponse assignRegion(RpcController controller,
MasterProtos.AssignRegionRequest request) throws ServiceException {
return stub.assignRegion(controller, request);
}
@Override
public MasterProtos.UnassignRegionResponse unassignRegion(RpcController controller,
MasterProtos.UnassignRegionRequest request) throws ServiceException {
return stub.unassignRegion(controller, request);
}
@Override
public MasterProtos.OfflineRegionResponse offlineRegion(RpcController controller,
MasterProtos.OfflineRegionRequest request) throws ServiceException {
return stub.offlineRegion(controller, request);
}
@Override
public MasterProtos.DeleteTableResponse deleteTable(RpcController controller,
MasterProtos.DeleteTableRequest request) throws ServiceException {
return stub.deleteTable(controller, request);
}
@Override
public MasterProtos.TruncateTableResponse truncateTable(RpcController controller,
MasterProtos.TruncateTableRequest request) throws ServiceException {
return stub.truncateTable(controller, request);
}
@Override
public MasterProtos.EnableTableResponse enableTable(RpcController controller,
MasterProtos.EnableTableRequest request) throws ServiceException {
return stub.enableTable(controller, request);
}
@Override
public MasterProtos.DisableTableResponse disableTable(RpcController controller,
MasterProtos.DisableTableRequest request) throws ServiceException {
return stub.disableTable(controller, request);
}
@Override
public MasterProtos.ModifyTableResponse modifyTable(RpcController controller,
MasterProtos.ModifyTableRequest request) throws ServiceException {
return stub.modifyTable(controller, request);
}
@Override
public MasterProtos.CreateTableResponse createTable(RpcController controller,
MasterProtos.CreateTableRequest request) throws ServiceException {
return stub.createTable(controller, request);
}
@Override
public MasterProtos.ShutdownResponse shutdown(RpcController controller,
MasterProtos.ShutdownRequest request) throws ServiceException {
return stub.shutdown(controller, request);
}
@Override
public MasterProtos.StopMasterResponse stopMaster(RpcController controller,
MasterProtos.StopMasterRequest request) throws ServiceException {
return stub.stopMaster(controller, request);
}
@Override
public MasterProtos.IsInMaintenanceModeResponse isMasterInMaintenanceMode(
final RpcController controller,
final MasterProtos.IsInMaintenanceModeRequest request) throws ServiceException {
return stub.isMasterInMaintenanceMode(controller, request);
}
@Override
public MasterProtos.BalanceResponse balance(RpcController controller,
MasterProtos.BalanceRequest request) throws ServiceException {
return stub.balance(controller, request);
}
@Override
public MasterProtos.SetBalancerRunningResponse setBalancerRunning(
RpcController controller, MasterProtos.SetBalancerRunningRequest request)
throws ServiceException {
return stub.setBalancerRunning(controller, request);
}
@Override
public NormalizeResponse normalize(RpcController controller,
NormalizeRequest request) throws ServiceException {
return stub.normalize(controller, request);
}
@Override
public SetNormalizerRunningResponse setNormalizerRunning(
RpcController controller, SetNormalizerRunningRequest request)
throws ServiceException {
return stub.setNormalizerRunning(controller, request);
}
@Override
public MasterProtos.RunCatalogScanResponse runCatalogScan(RpcController controller,
MasterProtos.RunCatalogScanRequest request) throws ServiceException {
return stub.runCatalogScan(controller, request);
}
@Override
public MasterProtos.EnableCatalogJanitorResponse enableCatalogJanitor(
RpcController controller, MasterProtos.EnableCatalogJanitorRequest request)
throws ServiceException {
return stub.enableCatalogJanitor(controller, request);
}
@Override
public MasterProtos.IsCatalogJanitorEnabledResponse isCatalogJanitorEnabled(
RpcController controller, MasterProtos.IsCatalogJanitorEnabledRequest request)
throws ServiceException {
return stub.isCatalogJanitorEnabled(controller, request);
}
@Override
public MasterProtos.RunCleanerChoreResponse runCleanerChore(RpcController controller,
MasterProtos.RunCleanerChoreRequest request)
throws ServiceException {
return stub.runCleanerChore(controller, request);
}
@Override
public MasterProtos.SetCleanerChoreRunningResponse setCleanerChoreRunning(
RpcController controller, MasterProtos.SetCleanerChoreRunningRequest request)
throws ServiceException {
return stub.setCleanerChoreRunning(controller, request);
}
@Override
public MasterProtos.IsCleanerChoreEnabledResponse isCleanerChoreEnabled(
RpcController controller, MasterProtos.IsCleanerChoreEnabledRequest request)
throws ServiceException {
return stub.isCleanerChoreEnabled(controller, request);
}
@Override
public ClientProtos.CoprocessorServiceResponse execMasterService(
RpcController controller, ClientProtos.CoprocessorServiceRequest request)
throws ServiceException {
return stub.execMasterService(controller, request);
}
@Override
public MasterProtos.SnapshotResponse snapshot(RpcController controller,
MasterProtos.SnapshotRequest request) throws ServiceException {
return stub.snapshot(controller, request);
}
@Override
public MasterProtos.GetCompletedSnapshotsResponse getCompletedSnapshots(
RpcController controller, MasterProtos.GetCompletedSnapshotsRequest request)
throws ServiceException {
return stub.getCompletedSnapshots(controller, request);
}
@Override
public MasterProtos.DeleteSnapshotResponse deleteSnapshot(RpcController controller,
MasterProtos.DeleteSnapshotRequest request) throws ServiceException {
return stub.deleteSnapshot(controller, request);
}
@Override
public MasterProtos.IsSnapshotDoneResponse isSnapshotDone(RpcController controller,
MasterProtos.IsSnapshotDoneRequest request) throws ServiceException {
return stub.isSnapshotDone(controller, request);
}
@Override
public MasterProtos.RestoreSnapshotResponse restoreSnapshot(
RpcController controller, MasterProtos.RestoreSnapshotRequest request)
throws ServiceException {
return stub.restoreSnapshot(controller, request);
}
@Override
public MasterProtos.ExecProcedureResponse execProcedure(
RpcController controller, MasterProtos.ExecProcedureRequest request)
throws ServiceException {
return stub.execProcedure(controller, request);
}
@Override
public MasterProtos.ExecProcedureResponse execProcedureWithRet(
RpcController controller, MasterProtos.ExecProcedureRequest request)
throws ServiceException {
return stub.execProcedureWithRet(controller, request);
}
@Override
public MasterProtos.IsProcedureDoneResponse isProcedureDone(RpcController controller,
MasterProtos.IsProcedureDoneRequest request) throws ServiceException {
return stub.isProcedureDone(controller, request);
}
@Override
public MasterProtos.GetProcedureResultResponse getProcedureResult(RpcController controller,
MasterProtos.GetProcedureResultRequest request) throws ServiceException {
return stub.getProcedureResult(controller, request);
}
@Override
public MasterProtos.IsMasterRunningResponse isMasterRunning(
RpcController controller, MasterProtos.IsMasterRunningRequest request)
throws ServiceException {
return stub.isMasterRunning(controller, request);
}
@Override
public MasterProtos.ModifyNamespaceResponse modifyNamespace(RpcController controller,
MasterProtos.ModifyNamespaceRequest request)
throws ServiceException {
return stub.modifyNamespace(controller, request);
}
@Override
public MasterProtos.CreateNamespaceResponse createNamespace(
RpcController controller,
MasterProtos.CreateNamespaceRequest request) throws ServiceException {
return stub.createNamespace(controller, request);
}
@Override
public MasterProtos.DeleteNamespaceResponse deleteNamespace(
RpcController controller,
MasterProtos.DeleteNamespaceRequest request) throws ServiceException {
return stub.deleteNamespace(controller, request);
}
@Override
public MasterProtos.GetNamespaceDescriptorResponse getNamespaceDescriptor(
RpcController controller,
MasterProtos.GetNamespaceDescriptorRequest request) throws ServiceException {
return stub.getNamespaceDescriptor(controller, request);
}
@Override
public MasterProtos.ListNamespaceDescriptorsResponse listNamespaceDescriptors(
RpcController controller,
MasterProtos.ListNamespaceDescriptorsRequest request) throws ServiceException {
return stub.listNamespaceDescriptors(controller, request);
}
@Override
public MasterProtos.ListTableDescriptorsByNamespaceResponse listTableDescriptorsByNamespace(
RpcController controller, MasterProtos.ListTableDescriptorsByNamespaceRequest request)
throws ServiceException {
return stub.listTableDescriptorsByNamespace(controller, request);
}
@Override
public MasterProtos.ListTableNamesByNamespaceResponse listTableNamesByNamespace(
RpcController controller, MasterProtos.ListTableNamesByNamespaceRequest request)
throws ServiceException {
return stub.listTableNamesByNamespace(controller, request);
}
@Override
public MasterProtos.GetTableStateResponse getTableState(
RpcController controller, MasterProtos.GetTableStateRequest request)
throws ServiceException {
return stub.getTableState(controller, request);
}
@Override
public void close() {
release(this.mss);
}
@Override
public MasterProtos.GetSchemaAlterStatusResponse getSchemaAlterStatus(
RpcController controller, MasterProtos.GetSchemaAlterStatusRequest request)
throws ServiceException {
return stub.getSchemaAlterStatus(controller, request);
}
@Override
public MasterProtos.GetTableDescriptorsResponse getTableDescriptors(
RpcController controller, MasterProtos.GetTableDescriptorsRequest request)
throws ServiceException {
return stub.getTableDescriptors(controller, request);
}
@Override
public MasterProtos.GetTableNamesResponse getTableNames(
RpcController controller, MasterProtos.GetTableNamesRequest request)
throws ServiceException {
return stub.getTableNames(controller, request);
}
@Override
public MasterProtos.GetClusterStatusResponse getClusterStatus(
RpcController controller, MasterProtos.GetClusterStatusRequest request)
throws ServiceException {
return stub.getClusterStatus(controller, request);
}
@Override
public MasterProtos.SetQuotaResponse setQuota(
RpcController controller, MasterProtos.SetQuotaRequest request)
throws ServiceException {
return stub.setQuota(controller, request);
}
@Override
public MasterProtos.MajorCompactionTimestampResponse getLastMajorCompactionTimestamp(
RpcController controller, MasterProtos.MajorCompactionTimestampRequest request)
throws ServiceException {
return stub.getLastMajorCompactionTimestamp(controller, request);
}
@Override
public MasterProtos.MajorCompactionTimestampResponse getLastMajorCompactionTimestampForRegion(
RpcController controller, MasterProtos.MajorCompactionTimestampForRegionRequest request)
throws ServiceException {
return stub.getLastMajorCompactionTimestampForRegion(controller, request);
}
@Override
public IsBalancerEnabledResponse isBalancerEnabled(RpcController controller,
IsBalancerEnabledRequest request) throws ServiceException {
return stub.isBalancerEnabled(controller, request);
}
@Override
public MasterProtos.SetSplitOrMergeEnabledResponse setSplitOrMergeEnabled(
RpcController controller, MasterProtos.SetSplitOrMergeEnabledRequest request)
throws ServiceException {
return stub.setSplitOrMergeEnabled(controller, request);
}
@Override
public MasterProtos.IsSplitOrMergeEnabledResponse isSplitOrMergeEnabled(
RpcController controller, MasterProtos.IsSplitOrMergeEnabledRequest request)
throws ServiceException {
return stub.isSplitOrMergeEnabled(controller, request);
}
@Override
public IsNormalizerEnabledResponse isNormalizerEnabled(RpcController controller,
IsNormalizerEnabledRequest request) throws ServiceException {
return stub.isNormalizerEnabled(controller, request);
}
@Override
public SecurityCapabilitiesResponse getSecurityCapabilities(RpcController controller,
SecurityCapabilitiesRequest request) throws ServiceException {
return stub.getSecurityCapabilities(controller, request);
}
@Override
public AddReplicationPeerResponse addReplicationPeer(RpcController controller,
AddReplicationPeerRequest request) throws ServiceException {
return stub.addReplicationPeer(controller, request);
}
@Override
public RemoveReplicationPeerResponse removeReplicationPeer(RpcController controller,
RemoveReplicationPeerRequest request) throws ServiceException {
return stub.removeReplicationPeer(controller, request);
}
@Override
public EnableReplicationPeerResponse enableReplicationPeer(RpcController controller,
EnableReplicationPeerRequest request) throws ServiceException {
return stub.enableReplicationPeer(controller, request);
}
@Override
public DisableReplicationPeerResponse disableReplicationPeer(RpcController controller,
DisableReplicationPeerRequest request) throws ServiceException {
return stub.disableReplicationPeer(controller, request);
}
@Override
public ListDrainingRegionServersResponse listDrainingRegionServers(RpcController controller,
ListDrainingRegionServersRequest request) throws ServiceException {
return stub.listDrainingRegionServers(controller, request);
}
@Override
public DrainRegionServersResponse drainRegionServers(RpcController controller,
DrainRegionServersRequest request) throws ServiceException {
return stub.drainRegionServers(controller, request);
}
@Override
public RemoveDrainFromRegionServersResponse removeDrainFromRegionServers(
RpcController controller, RemoveDrainFromRegionServersRequest request)
throws ServiceException {
return stub.removeDrainFromRegionServers(controller, request);
}
@Override
public GetReplicationPeerConfigResponse getReplicationPeerConfig(RpcController controller,
GetReplicationPeerConfigRequest request) throws ServiceException {
return stub.getReplicationPeerConfig(controller, request);
}
@Override
public UpdateReplicationPeerConfigResponse updateReplicationPeerConfig(
RpcController controller, UpdateReplicationPeerConfigRequest request)
throws ServiceException {
return stub.updateReplicationPeerConfig(controller, request);
}
@Override
public ListReplicationPeersResponse listReplicationPeers(RpcController controller,
ListReplicationPeersRequest request) throws ServiceException {
return stub.listReplicationPeers(controller, request);
}
};
}
private static void release(MasterServiceState mss) {
if (mss != null && mss.connection != null) {
((ConnectionImplementation)mss.connection).releaseMaster(mss);
}
}
private boolean isKeepAliveMasterConnectedAndRunning(MasterServiceState mss) {
if (mss.getStub() == null){
return false;
}
try {
return mss.isMasterRunning();
} catch (UndeclaredThrowableException e) {
// It's somehow messy, but we can receive exceptions such as
// java.net.ConnectException but they're not declared. So we catch it...
LOG.info("Master connection is not running anymore", e.getUndeclaredThrowable());
return false;
} catch (IOException se) {
LOG.warn("Checking master connection", se);
return false;
}
}
void releaseMaster(MasterServiceState mss) {
if (mss.getStub() == null) {
return;
}
synchronized (masterAndZKLock) {
--mss.userCount;
}
}
private void closeMasterService(MasterServiceState mss) {
if (mss.getStub() != null) {
LOG.info("Closing master protocol: " + mss);
mss.clearStub();
}
mss.userCount = 0;
}
/**
* Immediate close of the shared master. Can be by the delayed close or when closing the
* connection itself.
*/
private void closeMaster() {
synchronized (masterAndZKLock) {
closeMasterService(masterServiceState);
}
}
void updateCachedLocation(HRegionInfo hri, ServerName source,
ServerName serverName, long seqNum) {
HRegionLocation newHrl = new HRegionLocation(hri, serverName, seqNum);
cacheLocation(hri.getTable(), source, newHrl);
}
@Override
public void deleteCachedRegionLocation(final HRegionLocation location) {
metaCache.clearCache(location);
}
/**
* Update the location with the new value (if the exception is a RegionMovedException)
* or delete it from the cache. Does nothing if we can be sure from the exception that
* the location is still accurate, or if the cache has already been updated.
* @param exception an object (to simplify user code) on which we will try to find a nested
* or wrapped or both RegionMovedException
* @param source server that is the source of the location update.
*/
@Override
public void updateCachedLocations(final TableName tableName, byte[] regionName, byte[] rowkey,
final Object exception, final ServerName source) {
if (rowkey == null || tableName == null) {
LOG.warn("Coding error, see method javadoc. row=" + (rowkey == null ? "null" : rowkey) +
", tableName=" + (tableName == null ? "null" : tableName));
return;
}
if (source == null) {
// This should not happen, but let's secure ourselves.
return;
}
if (regionName == null) {
// we do not know which region, so just remove the cache entry for the row and server
if (metrics != null) {
metrics.incrCacheDroppingExceptions(exception);
}
metaCache.clearCache(tableName, rowkey, source);
return;
}
// Is it something we have already updated?
final RegionLocations oldLocations = getCachedLocation(tableName, rowkey);
HRegionLocation oldLocation = null;
if (oldLocations != null) {
oldLocation = oldLocations.getRegionLocationByRegionName(regionName);
}
if (oldLocation == null || !source.equals(oldLocation.getServerName())) {
// There is no such location in the cache (it's been removed already) or
// the cache has already been refreshed with a different location. => nothing to do
return;
}
HRegionInfo regionInfo = oldLocation.getRegionInfo();
Throwable cause = ClientExceptionsUtil.findException(exception);
if (cause != null) {
if (!ClientExceptionsUtil.isMetaClearingException(cause)) {
// We know that the region is still on this region server
return;
}
if (cause instanceof RegionMovedException) {
RegionMovedException rme = (RegionMovedException) cause;
if (LOG.isTraceEnabled()) {
LOG.trace("Region " + regionInfo.getRegionNameAsString() + " moved to " +
rme.getHostname() + ":" + rme.getPort() +
" according to " + source.getHostAndPort());
}
// We know that the region is not anymore on this region server, but we know
// the new location.
updateCachedLocation(
regionInfo, source, rme.getServerName(), rme.getLocationSeqNum());
return;
}
}
if (metrics != null) {
metrics.incrCacheDroppingExceptions(exception);
}
// If we're here, it means that can cannot be sure about the location, so we remove it from
// the cache. Do not send the source because source can be a new server in the same host:port
metaCache.clearCache(regionInfo);
}
@Override
public AsyncProcess getAsyncProcess() {
return asyncProcess;
}
@Override
public ServerStatisticTracker getStatisticsTracker() {
return this.stats;
}
@Override
public ClientBackoffPolicy getBackoffPolicy() {
return this.backoffPolicy;
}
/*
* Return the number of cached region for a table. It will only be called
* from a unit test.
*/
@VisibleForTesting
int getNumberOfCachedRegionLocations(final TableName tableName) {
return metaCache.getNumberOfCachedRegionLocations(tableName);
}
@Override
public void abort(final String msg, Throwable t) {
if (t instanceof KeeperException.SessionExpiredException
&& keepAliveZookeeper != null) {
synchronized (masterAndZKLock) {
if (keepAliveZookeeper != null) {
LOG.warn("This client just lost it's session with ZooKeeper," +
" closing it." +
" It will be recreated next time someone needs it", t);
closeZooKeeperWatcher();
}
}
} else {
if (t != null) {
LOG.fatal(msg, t);
} else {
LOG.fatal(msg);
}
this.aborted = true;
close();
this.closed = true;
}
}
@Override
public boolean isClosed() {
return this.closed;
}
@Override
public boolean isAborted(){
return this.aborted;
}
@Override
public int getCurrentNrHRS() throws IOException {
return this.registry.getCurrentNrHRS();
}
@Override
public void close() {
if (this.closed) {
return;
}
closeMaster();
shutdownPools();
if (this.metrics != null) {
this.metrics.shutdown();
}
this.closed = true;
closeZooKeeperWatcher();
this.stubs.clear();
if (clusterStatusListener != null) {
clusterStatusListener.close();
}
if (rpcClient != null) {
rpcClient.close();
}
}
/**
* Close the connection for good. On the off chance that someone is unable to close
* the connection, perhaps because it bailed out prematurely, the method
* below will ensure that this instance is cleaned up.
* Caveat: The JVM may take an unknown amount of time to call finalize on an
* unreachable object, so our hope is that every consumer cleans up after
* itself, like any good citizen.
*/
@Override
protected void finalize() throws Throwable {
super.finalize();
close();
}
@Override
public NonceGenerator getNonceGenerator() {
return nonceGenerator;
}
@Override
public TableState getTableState(TableName tableName) throws IOException {
if (this.closed) {
throw new IOException(toString() + " closed");
}
TableState tableState = MetaTableAccessor.getTableState(this, tableName);
if (tableState == null) {
throw new TableNotFoundException(tableName);
}
return tableState;
}
@Override
public RpcRetryingCallerFactory getNewRpcRetryingCallerFactory(Configuration conf) {
return RpcRetryingCallerFactory
.instantiate(conf, this.interceptor, this.getStatisticsTracker());
}
@Override
public boolean hasCellBlockSupport() {
return this.rpcClient.hasCellBlockSupport();
}
@Override
public ConnectionConfiguration getConnectionConfiguration() {
return this.connectionConfig;
}
@Override
public RpcRetryingCallerFactory getRpcRetryingCallerFactory() {
return this.rpcCallerFactory;
}
@Override
public RpcControllerFactory getRpcControllerFactory() {
return this.rpcControllerFactory;
}
}