/**
*
* 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.master;
import java.io.IOException;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.PleaseHoldException;
import org.apache.hadoop.hbase.ServerLoad;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.UnknownRegionException;
import org.apache.hadoop.hbase.MetaTableAccessor;
import org.apache.hadoop.hbase.exceptions.MergeRegionException;
import org.apache.hadoop.hbase.exceptions.UnknownProtocolException;
import org.apache.hadoop.hbase.ipc.RpcServer.BlockingServiceAndInterface;
import org.apache.hadoop.hbase.ipc.ServerRpcController;
import org.apache.hadoop.hbase.procedure.MasterProcedureManager;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.RequestConverter;
import org.apache.hadoop.hbase.protobuf.ResponseConverter;
import org.apache.hadoop.hbase.protobuf.generated.*;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.NameStringPair;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ProcedureDescription;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier.RegionSpecifierType;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.AddColumnRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.AddColumnResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.AssignRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.AssignRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.BalanceRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.BalanceResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateNamespaceResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateTableRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.CreateTableResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteColumnRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteColumnResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteNamespaceResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteSnapshotRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteSnapshotResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteTableRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DeleteTableResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DisableTableRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DisableTableResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DispatchMergingRegionsRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.DispatchMergingRegionsResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.EnableCatalogJanitorRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.EnableCatalogJanitorResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.EnableTableRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.EnableTableResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ExecProcedureRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ExecProcedureResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetClusterStatusRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetClusterStatusResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetCompletedSnapshotsRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetCompletedSnapshotsResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetNamespaceDescriptorRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetNamespaceDescriptorResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetSchemaAlterStatusRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetSchemaAlterStatusResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetTableDescriptorsRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetTableDescriptorsResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetTableNamesRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.GetTableNamesResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsCatalogJanitorEnabledRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsCatalogJanitorEnabledResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsMasterRunningRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsMasterRunningResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsProcedureDoneRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsProcedureDoneResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsRestoreSnapshotDoneRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsRestoreSnapshotDoneResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsSnapshotDoneRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.IsSnapshotDoneResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ListNamespaceDescriptorsRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ListNamespaceDescriptorsResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ListTableDescriptorsByNamespaceRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ListTableDescriptorsByNamespaceResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ListTableNamesByNamespaceRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ListTableNamesByNamespaceResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.MasterService;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyColumnRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyColumnResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyNamespaceResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyTableRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ModifyTableResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.MoveRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.MoveRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.OfflineRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.OfflineRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.RestoreSnapshotRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.RestoreSnapshotResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.RunCatalogScanRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.RunCatalogScanResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.SetBalancerRunningRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.SetBalancerRunningResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ShutdownRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.ShutdownResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.SnapshotRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.SnapshotResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.StopMasterRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.StopMasterResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.TruncateTableRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.TruncateTableResponse;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.UnassignRegionRequest;
import org.apache.hadoop.hbase.protobuf.generated.MasterProtos.UnassignRegionResponse;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.GetLastFlushedSequenceIdRequest;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.GetLastFlushedSequenceIdResponse;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerReportRequest;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerReportResponse;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStartupRequest;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStartupResponse;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStatusService;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionStateTransition;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.ReportRSFatalErrorRequest;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.ReportRSFatalErrorResponse;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;
import org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;
import org.apache.hadoop.hbase.regionserver.RSRpcServices;
import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;
import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.zookeeper.KeeperException;
import com.google.protobuf.ByteString;
import com.google.protobuf.Descriptors;
import com.google.protobuf.Message;
import com.google.protobuf.RpcCallback;
import com.google.protobuf.RpcController;
import com.google.protobuf.Service;
import com.google.protobuf.ServiceException;
/**
* Implements the master RPC services.
*/
@InterfaceAudience.Private
@SuppressWarnings("deprecation")
public class MasterRpcServices extends RSRpcServices
implements MasterService.BlockingInterface, RegionServerStatusService.BlockingInterface {
protected static final Log LOG = LogFactory.getLog(MasterRpcServices.class.getName());
private final HMaster master;
/**
* @return Subset of configuration to pass initializing regionservers: e.g.
* the filesystem to use and root directory to use.
*/
private RegionServerStartupResponse.Builder createConfigurationSubset() {
RegionServerStartupResponse.Builder resp = addConfig(
RegionServerStartupResponse.newBuilder(), HConstants.HBASE_DIR);
resp = addConfig(resp, "fs.defaultFS");
return addConfig(resp, "hbase.master.info.port");
}
private RegionServerStartupResponse.Builder addConfig(
final RegionServerStartupResponse.Builder resp, final String key) {
NameStringPair.Builder entry = NameStringPair.newBuilder()
.setName(key)
.setValue(master.getConfiguration().get(key));
resp.addMapEntries(entry.build());
return resp;
}
public MasterRpcServices(HMaster m) throws IOException {
super(m);
master = m;
}
enum BalanceSwitchMode {
SYNC,
ASYNC
}
/**
* Assigns balancer switch according to BalanceSwitchMode
* @param b new balancer switch
* @param mode BalanceSwitchMode
* @return old balancer switch
*/
boolean switchBalancer(final boolean b, BalanceSwitchMode mode) throws IOException {
boolean oldValue = master.loadBalancerTracker.isBalancerOn();
boolean newValue = b;
try {
if (master.cpHost != null) {
newValue = master.cpHost.preBalanceSwitch(newValue);
}
try {
if (mode == BalanceSwitchMode.SYNC) {
synchronized (master.balancer) {
master.loadBalancerTracker.setBalancerOn(newValue);
}
} else {
master.loadBalancerTracker.setBalancerOn(newValue);
}
} catch (KeeperException ke) {
throw new IOException(ke);
}
LOG.info(master.getClientIdAuditPrefix() + " set balanceSwitch=" + newValue);
if (master.cpHost != null) {
master.cpHost.postBalanceSwitch(oldValue, newValue);
}
} catch (IOException ioe) {
LOG.warn("Error flipping balance switch", ioe);
}
return oldValue;
}
boolean synchronousBalanceSwitch(final boolean b) throws IOException {
return switchBalancer(b, BalanceSwitchMode.SYNC);
}
/**
* @return list of blocking services and their security info classes that this server supports
*/
protected List<BlockingServiceAndInterface> getServices() {
List<BlockingServiceAndInterface> bssi = new ArrayList<BlockingServiceAndInterface>(4);
bssi.add(new BlockingServiceAndInterface(
MasterService.newReflectiveBlockingService(this),
MasterService.BlockingInterface.class));
bssi.add(new BlockingServiceAndInterface(
RegionServerStatusService.newReflectiveBlockingService(this),
RegionServerStatusService.BlockingInterface.class));
bssi.addAll(super.getServices());
return bssi;
}
@Override
public GetLastFlushedSequenceIdResponse getLastFlushedSequenceId(RpcController controller,
GetLastFlushedSequenceIdRequest request) throws ServiceException {
try {
master.checkServiceStarted();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
byte[] encodedRegionName = request.getRegionName().toByteArray();
long seqId = master.serverManager.getLastFlushedSequenceId(encodedRegionName);
return ResponseConverter.buildGetLastFlushedSequenceIdResponse(seqId);
}
@Override
public RegionServerReportResponse regionServerReport(
RpcController controller, RegionServerReportRequest request) throws ServiceException {
try {
master.checkServiceStarted();
ClusterStatusProtos.ServerLoad sl = request.getLoad();
ServerName serverName = ProtobufUtil.toServerName(request.getServer());
ServerLoad oldLoad = master.serverManager.getLoad(serverName);
master.serverManager.regionServerReport(serverName, new ServerLoad(sl));
if (sl != null && master.metricsMaster != null) {
// Up our metrics.
master.metricsMaster.incrementRequests(sl.getTotalNumberOfRequests()
- (oldLoad != null ? oldLoad.getTotalNumberOfRequests() : 0));
}
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return RegionServerReportResponse.newBuilder().build();
}
@Override
public RegionServerStartupResponse regionServerStartup(
RpcController controller, RegionServerStartupRequest request) throws ServiceException {
// Register with server manager
try {
master.checkServiceStarted();
InetAddress ia = master.getRemoteInetAddress(
request.getPort(), request.getServerStartCode());
ServerName rs = master.serverManager.regionServerStartup(ia, request.getPort(),
request.getServerStartCode(), request.getServerCurrentTime());
// Send back some config info
RegionServerStartupResponse.Builder resp = createConfigurationSubset();
NameStringPair.Builder entry = NameStringPair.newBuilder()
.setName(HConstants.KEY_FOR_HOSTNAME_SEEN_BY_MASTER)
.setValue(rs.getHostname());
resp.addMapEntries(entry.build());
return resp.build();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
@Override
public ReportRSFatalErrorResponse reportRSFatalError(
RpcController controller, ReportRSFatalErrorRequest request) throws ServiceException {
String errorText = request.getErrorMessage();
ServerName sn = ProtobufUtil.toServerName(request.getServer());
String msg = "Region server " + sn
+ " reported a fatal error:\n" + errorText;
LOG.error(msg);
master.rsFatals.add(msg);
return ReportRSFatalErrorResponse.newBuilder().build();
}
@Override
public AddColumnResponse addColumn(RpcController controller,
AddColumnRequest req) throws ServiceException {
try {
master.addColumn(ProtobufUtil.toTableName(req.getTableName()),
HColumnDescriptor.convert(req.getColumnFamilies()));
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return AddColumnResponse.newBuilder().build();
}
@Override
public AssignRegionResponse assignRegion(RpcController controller,
AssignRegionRequest req) throws ServiceException {
try {
final byte [] regionName = req.getRegion().getValue().toByteArray();
RegionSpecifierType type = req.getRegion().getType();
AssignRegionResponse arr = AssignRegionResponse.newBuilder().build();
master.checkInitialized();
if (type != RegionSpecifierType.REGION_NAME) {
LOG.warn("assignRegion specifier type: expected: " + RegionSpecifierType.REGION_NAME
+ " actual: " + type);
}
RegionStates regionStates = master.assignmentManager.getRegionStates();
HRegionInfo regionInfo = regionStates.getRegionInfo(regionName);
if (regionInfo == null) throw new UnknownRegionException(Bytes.toString(regionName));
if (master.cpHost != null) {
if (master.cpHost.preAssign(regionInfo)) {
return arr;
}
}
LOG.info(master.getClientIdAuditPrefix()
+ " assign " + regionInfo.getRegionNameAsString());
master.assignmentManager.assign(regionInfo, true, true);
if (master.cpHost != null) {
master.cpHost.postAssign(regionInfo);
}
return arr;
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
@Override
public BalanceResponse balance(RpcController controller,
BalanceRequest request) throws ServiceException {
try {
return BalanceResponse.newBuilder().setBalancerRan(master.balance()).build();
} catch (IOException ex) {
throw new ServiceException(ex);
}
}
@Override
public CreateNamespaceResponse createNamespace(RpcController controller,
CreateNamespaceRequest request) throws ServiceException {
try {
master.createNamespace(ProtobufUtil.toNamespaceDescriptor(request.getNamespaceDescriptor()));
return CreateNamespaceResponse.getDefaultInstance();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public CreateTableResponse createTable(RpcController controller, CreateTableRequest req)
throws ServiceException {
HTableDescriptor hTableDescriptor = HTableDescriptor.convert(req.getTableSchema());
byte [][] splitKeys = ProtobufUtil.getSplitKeysArray(req);
try {
master.createTable(hTableDescriptor, splitKeys);
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return CreateTableResponse.newBuilder().build();
}
@Override
public DeleteColumnResponse deleteColumn(RpcController controller,
DeleteColumnRequest req) throws ServiceException {
try {
master.deleteColumn(ProtobufUtil.toTableName(req.getTableName()),
req.getColumnName().toByteArray());
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return DeleteColumnResponse.newBuilder().build();
}
@Override
public DeleteNamespaceResponse deleteNamespace(RpcController controller,
DeleteNamespaceRequest request) throws ServiceException {
try {
master.deleteNamespace(request.getNamespaceName());
return DeleteNamespaceResponse.getDefaultInstance();
} catch (IOException e) {
throw new ServiceException(e);
}
}
/**
* Execute Delete Snapshot operation.
* @return DeleteSnapshotResponse (a protobuf wrapped void) if the snapshot existed and was
* deleted properly.
* @throws ServiceException wrapping SnapshotDoesNotExistException if specified snapshot did not
* exist.
*/
@Override
public DeleteSnapshotResponse deleteSnapshot(RpcController controller,
DeleteSnapshotRequest request) throws ServiceException {
try {
master.checkInitialized();
master.snapshotManager.checkSnapshotSupport();
LOG.info(master.getClientIdAuditPrefix() + " delete " + request.getSnapshot());
master.snapshotManager.deleteSnapshot(request.getSnapshot());
return DeleteSnapshotResponse.newBuilder().build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public DeleteTableResponse deleteTable(RpcController controller,
DeleteTableRequest request) throws ServiceException {
try {
master.deleteTable(ProtobufUtil.toTableName(request.getTableName()));
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return DeleteTableResponse.newBuilder().build();
}
@Override
public TruncateTableResponse truncateTable(RpcController controller, TruncateTableRequest request)
throws ServiceException {
try {
master.truncateTable(ProtobufUtil.toTableName(request.getTableName()),
request.getPreserveSplits());
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return TruncateTableResponse.newBuilder().build();
}
@Override
public DisableTableResponse disableTable(RpcController controller,
DisableTableRequest request) throws ServiceException {
try {
master.disableTable(ProtobufUtil.toTableName(request.getTableName()));
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return DisableTableResponse.newBuilder().build();
}
@Override
public DispatchMergingRegionsResponse dispatchMergingRegions(RpcController c,
DispatchMergingRegionsRequest request) throws ServiceException {
try {
master.checkInitialized();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
final byte[] encodedNameOfRegionA = request.getRegionA().getValue()
.toByteArray();
final byte[] encodedNameOfRegionB = request.getRegionB().getValue()
.toByteArray();
final boolean forcible = request.getForcible();
if (request.getRegionA().getType() != RegionSpecifierType.ENCODED_REGION_NAME
|| request.getRegionB().getType() != RegionSpecifierType.ENCODED_REGION_NAME) {
LOG.warn("mergeRegions specifier type: expected: "
+ RegionSpecifierType.ENCODED_REGION_NAME + " actual: region_a="
+ request.getRegionA().getType() + ", region_b="
+ request.getRegionB().getType());
}
RegionStates regionStates = master.assignmentManager.getRegionStates();
RegionState regionStateA = regionStates.getRegionState(Bytes.toString(encodedNameOfRegionA));
RegionState regionStateB = regionStates.getRegionState(Bytes.toString(encodedNameOfRegionB));
if (regionStateA == null || regionStateB == null) {
throw new ServiceException(new UnknownRegionException(
Bytes.toStringBinary(regionStateA == null ? encodedNameOfRegionA
: encodedNameOfRegionB)));
}
if (!regionStateA.isOpened() || !regionStateB.isOpened()) {
throw new ServiceException(new MergeRegionException(
"Unable to merge regions not online " + regionStateA + ", " + regionStateB));
}
HRegionInfo regionInfoA = regionStateA.getRegion();
HRegionInfo regionInfoB = regionStateB.getRegion();
if (regionInfoA.compareTo(regionInfoB) == 0) {
throw new ServiceException(new MergeRegionException(
"Unable to merge a region to itself " + regionInfoA + ", " + regionInfoB));
}
if (!forcible && !HRegionInfo.areAdjacent(regionInfoA, regionInfoB)) {
throw new ServiceException(new MergeRegionException(
"Unable to merge not adjacent regions "
+ regionInfoA.getRegionNameAsString() + ", "
+ regionInfoB.getRegionNameAsString()
+ " where forcible = " + forcible));
}
try {
master.dispatchMergingRegions(regionInfoA, regionInfoB, forcible);
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return DispatchMergingRegionsResponse.newBuilder().build();
}
@Override
public EnableCatalogJanitorResponse enableCatalogJanitor(RpcController c,
EnableCatalogJanitorRequest req) throws ServiceException {
try {
master.checkInitialized();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return EnableCatalogJanitorResponse.newBuilder().setPrevValue(
master.catalogJanitorChore.setEnabled(req.getEnable())).build();
}
@Override
public EnableTableResponse enableTable(RpcController controller,
EnableTableRequest request) throws ServiceException {
try {
master.enableTable(ProtobufUtil.toTableName(request.getTableName()));
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return EnableTableResponse.newBuilder().build();
}
@Override
public ClientProtos.CoprocessorServiceResponse execMasterService(final RpcController controller,
final ClientProtos.CoprocessorServiceRequest request) throws ServiceException {
try {
master.checkInitialized();
ServerRpcController execController = new ServerRpcController();
ClientProtos.CoprocessorServiceCall call = request.getCall();
String serviceName = call.getServiceName();
String methodName = call.getMethodName();
if (!master.coprocessorServiceHandlers.containsKey(serviceName)) {
throw new UnknownProtocolException(null,
"No registered master coprocessor service found for name "+serviceName);
}
Service service = master.coprocessorServiceHandlers.get(serviceName);
Descriptors.ServiceDescriptor serviceDesc = service.getDescriptorForType();
Descriptors.MethodDescriptor methodDesc = serviceDesc.findMethodByName(methodName);
if (methodDesc == null) {
throw new UnknownProtocolException(service.getClass(),
"Unknown method "+methodName+" called on master service "+serviceName);
}
//invoke the method
Message execRequest = service.getRequestPrototype(methodDesc).newBuilderForType()
.mergeFrom(call.getRequest()).build();
final Message.Builder responseBuilder =
service.getResponsePrototype(methodDesc).newBuilderForType();
service.callMethod(methodDesc, execController, execRequest, new RpcCallback<Message>() {
@Override
public void run(Message message) {
if (message != null) {
responseBuilder.mergeFrom(message);
}
}
});
Message execResult = responseBuilder.build();
if (execController.getFailedOn() != null) {
throw execController.getFailedOn();
}
ClientProtos.CoprocessorServiceResponse.Builder builder =
ClientProtos.CoprocessorServiceResponse.newBuilder();
builder.setRegion(RequestConverter.buildRegionSpecifier(
RegionSpecifierType.REGION_NAME, HConstants.EMPTY_BYTE_ARRAY));
builder.setValue(
builder.getValueBuilder().setName(execResult.getClass().getName())
.setValue(execResult.toByteString()));
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
/**
* Triggers an asynchronous attempt to run a distributed procedure.
* {@inheritDoc}
*/
@Override
public ExecProcedureResponse execProcedure(RpcController controller,
ExecProcedureRequest request) throws ServiceException {
try {
master.checkInitialized();
ProcedureDescription desc = request.getProcedure();
MasterProcedureManager mpm = master.mpmHost.getProcedureManager(
desc.getSignature());
if (mpm == null) {
throw new ServiceException("The procedure is not registered: "
+ desc.getSignature());
}
LOG.info(master.getClientIdAuditPrefix() + " procedure request for: "
+ desc.getSignature());
mpm.execProcedure(desc);
// send back the max amount of time the client should wait for the procedure
// to complete
long waitTime = SnapshotDescriptionUtils.DEFAULT_MAX_WAIT_TIME;
return ExecProcedureResponse.newBuilder().setExpectedTimeout(
waitTime).build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
/**
* Triggers a synchronous attempt to run a distributed procedure and sets
* return data in response.
* {@inheritDoc}
*/
@Override
public ExecProcedureResponse execProcedureWithRet(RpcController controller,
ExecProcedureRequest request) throws ServiceException {
try {
master.checkInitialized();
ProcedureDescription desc = request.getProcedure();
MasterProcedureManager mpm = master.mpmHost.getProcedureManager(
desc.getSignature());
if (mpm == null) {
throw new ServiceException("The procedure is not registered: "
+ desc.getSignature());
}
LOG.info(master.getClientIdAuditPrefix() + " procedure request for: "
+ desc.getSignature());
byte[] data = mpm.execProcedureWithRet(desc);
ExecProcedureResponse.Builder builder = ExecProcedureResponse.newBuilder();
// set return data if available
if (data != null) {
builder.setReturnData(ByteString.copyFrom(data));
}
return builder.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public GetClusterStatusResponse getClusterStatus(RpcController controller,
GetClusterStatusRequest req) throws ServiceException {
GetClusterStatusResponse.Builder response = GetClusterStatusResponse.newBuilder();
try {
master.checkInitialized();
response.setClusterStatus(master.getClusterStatus().convert());
} catch (IOException e) {
throw new ServiceException(e);
}
return response.build();
}
/**
* List the currently available/stored snapshots. Any in-progress snapshots are ignored
*/
@Override
public GetCompletedSnapshotsResponse getCompletedSnapshots(RpcController controller,
GetCompletedSnapshotsRequest request) throws ServiceException {
try {
master.checkInitialized();
GetCompletedSnapshotsResponse.Builder builder = GetCompletedSnapshotsResponse.newBuilder();
List<SnapshotDescription> snapshots = master.snapshotManager.getCompletedSnapshots();
// convert to protobuf
for (SnapshotDescription snapshot : snapshots) {
builder.addSnapshots(snapshot);
}
return builder.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public GetNamespaceDescriptorResponse getNamespaceDescriptor(
RpcController controller, GetNamespaceDescriptorRequest request)
throws ServiceException {
try {
return GetNamespaceDescriptorResponse.newBuilder()
.setNamespaceDescriptor(ProtobufUtil.toProtoNamespaceDescriptor(
master.getNamespaceDescriptor(request.getNamespaceName())))
.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
/**
* Get the number of regions of the table that have been updated by the alter.
*
* @return Pair indicating the number of regions updated Pair.getFirst is the
* regions that are yet to be updated Pair.getSecond is the total number
* of regions of the table
* @throws IOException
*/
@Override
public GetSchemaAlterStatusResponse getSchemaAlterStatus(
RpcController controller, GetSchemaAlterStatusRequest req) throws ServiceException {
// TODO: currently, we query using the table name on the client side. this
// may overlap with other table operations or the table operation may
// have completed before querying this API. We need to refactor to a
// transaction system in the future to avoid these ambiguities.
TableName tableName = ProtobufUtil.toTableName(req.getTableName());
try {
master.checkInitialized();
Pair<Integer,Integer> pair = master.assignmentManager.getReopenStatus(tableName);
GetSchemaAlterStatusResponse.Builder ret = GetSchemaAlterStatusResponse.newBuilder();
ret.setYetToUpdateRegions(pair.getFirst());
ret.setTotalRegions(pair.getSecond());
return ret.build();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
/**
* Get list of TableDescriptors for requested tables.
* @param c Unused (set to null).
* @param req GetTableDescriptorsRequest that contains:
* - tableNames: requested tables, or if empty, all are requested
* @return GetTableDescriptorsResponse
* @throws ServiceException
*/
@Override
public GetTableDescriptorsResponse getTableDescriptors(RpcController c,
GetTableDescriptorsRequest req) throws ServiceException {
try {
master.checkInitialized();
final String regex = req.hasRegex() ? req.getRegex() : null;
final String namespace = req.hasNamespace() ? req.getNamespace() : null;
List<TableName> tableNameList = null;
if (req.getTableNamesCount() > 0) {
tableNameList = new ArrayList<TableName>(req.getTableNamesCount());
for (HBaseProtos.TableName tableNamePB: req.getTableNamesList()) {
tableNameList.add(ProtobufUtil.toTableName(tableNamePB));
}
}
List<HTableDescriptor> descriptors = master.listTableDescriptors(namespace, regex,
tableNameList, req.getIncludeSysTables());
GetTableDescriptorsResponse.Builder builder = GetTableDescriptorsResponse.newBuilder();
if (descriptors != null && descriptors.size() > 0) {
// Add the table descriptors to the response
for (HTableDescriptor htd: descriptors) {
builder.addTableSchema(htd.convert());
}
}
return builder.build();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
/**
* Get list of userspace table names
* @param controller Unused (set to null).
* @param req GetTableNamesRequest
* @return GetTableNamesResponse
* @throws ServiceException
*/
@Override
public GetTableNamesResponse getTableNames(RpcController controller,
GetTableNamesRequest req) throws ServiceException {
try {
master.checkInitialized();
final String regex = req.hasRegex() ? req.getRegex() : null;
final String namespace = req.hasNamespace() ? req.getNamespace() : null;
List<TableName> tableNames = master.listTableNames(namespace, regex,
req.getIncludeSysTables());
GetTableNamesResponse.Builder builder = GetTableNamesResponse.newBuilder();
if (tableNames != null && tableNames.size() > 0) {
// Add the table names to the response
for (TableName table: tableNames) {
builder.addTableNames(ProtobufUtil.toProtoTableName(table));
}
}
return builder.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public IsCatalogJanitorEnabledResponse isCatalogJanitorEnabled(RpcController c,
IsCatalogJanitorEnabledRequest req) throws ServiceException {
return IsCatalogJanitorEnabledResponse.newBuilder().setValue(
master.isCatalogJanitorEnabled()).build();
}
@Override
public IsMasterRunningResponse isMasterRunning(RpcController c,
IsMasterRunningRequest req) throws ServiceException {
try {
master.checkServiceStarted();
return IsMasterRunningResponse.newBuilder().setIsMasterRunning(
!master.isStopped()).build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
/**
* Checks if the specified procedure is done.
* @return true if the procedure is done,
* false if the procedure is in the process of completing
* @throws ServiceException if invalid procedure, or
* a failed procedure with progress failure reason.
*/
@Override
public IsProcedureDoneResponse isProcedureDone(RpcController controller,
IsProcedureDoneRequest request) throws ServiceException {
try {
master.checkInitialized();
ProcedureDescription desc = request.getProcedure();
MasterProcedureManager mpm = master.mpmHost.getProcedureManager(
desc.getSignature());
if (mpm == null) {
throw new ServiceException("The procedure is not registered: "
+ desc.getSignature());
}
LOG.debug("Checking to see if procedure from request:"
+ desc.getSignature() + " is done");
IsProcedureDoneResponse.Builder builder =
IsProcedureDoneResponse.newBuilder();
boolean done = mpm.isProcedureDone(desc);
builder.setDone(done);
return builder.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
/**
* Returns the status of the requested snapshot restore/clone operation.
* This method is not exposed to the user, it is just used internally by HBaseAdmin
* to verify if the restore is completed.
*
* No exceptions are thrown if the restore is not running, the result will be "done".
*
* @return done <tt>true</tt> if the restore/clone operation is completed.
* @throws ServiceException if the operation failed.
*/
@Override
public IsRestoreSnapshotDoneResponse isRestoreSnapshotDone(RpcController controller,
IsRestoreSnapshotDoneRequest request) throws ServiceException {
try {
master.checkInitialized();
SnapshotDescription snapshot = request.getSnapshot();
IsRestoreSnapshotDoneResponse.Builder builder = IsRestoreSnapshotDoneResponse.newBuilder();
boolean done = master.snapshotManager.isRestoreDone(snapshot);
builder.setDone(done);
return builder.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
/**
* Checks if the specified snapshot is done.
* @return true if the snapshot is in file system ready to use,
* false if the snapshot is in the process of completing
* @throws ServiceException wrapping UnknownSnapshotException if invalid snapshot, or
* a wrapped HBaseSnapshotException with progress failure reason.
*/
@Override
public IsSnapshotDoneResponse isSnapshotDone(RpcController controller,
IsSnapshotDoneRequest request) throws ServiceException {
LOG.debug("Checking to see if snapshot from request:" +
ClientSnapshotDescriptionUtils.toString(request.getSnapshot()) + " is done");
try {
master.checkInitialized();
IsSnapshotDoneResponse.Builder builder = IsSnapshotDoneResponse.newBuilder();
boolean done = master.snapshotManager.isSnapshotDone(request.getSnapshot());
builder.setDone(done);
return builder.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public ListNamespaceDescriptorsResponse listNamespaceDescriptors(RpcController c,
ListNamespaceDescriptorsRequest request) throws ServiceException {
try {
ListNamespaceDescriptorsResponse.Builder response =
ListNamespaceDescriptorsResponse.newBuilder();
for(NamespaceDescriptor ns: master.listNamespaceDescriptors()) {
response.addNamespaceDescriptor(ProtobufUtil.toProtoNamespaceDescriptor(ns));
}
return response.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public ListTableDescriptorsByNamespaceResponse listTableDescriptorsByNamespace(RpcController c,
ListTableDescriptorsByNamespaceRequest request) throws ServiceException {
try {
ListTableDescriptorsByNamespaceResponse.Builder b =
ListTableDescriptorsByNamespaceResponse.newBuilder();
for(HTableDescriptor htd: master.listTableDescriptorsByNamespace(request.getNamespaceName())) {
b.addTableSchema(htd.convert());
}
return b.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public ListTableNamesByNamespaceResponse listTableNamesByNamespace(RpcController c,
ListTableNamesByNamespaceRequest request) throws ServiceException {
try {
ListTableNamesByNamespaceResponse.Builder b =
ListTableNamesByNamespaceResponse.newBuilder();
for (TableName tableName: master.listTableNamesByNamespace(request.getNamespaceName())) {
b.addTableName(ProtobufUtil.toProtoTableName(tableName));
}
return b.build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public ModifyColumnResponse modifyColumn(RpcController controller,
ModifyColumnRequest req) throws ServiceException {
try {
master.modifyColumn(ProtobufUtil.toTableName(req.getTableName()),
HColumnDescriptor.convert(req.getColumnFamilies()));
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return ModifyColumnResponse.newBuilder().build();
}
@Override
public ModifyNamespaceResponse modifyNamespace(RpcController controller,
ModifyNamespaceRequest request) throws ServiceException {
try {
master.modifyNamespace(
ProtobufUtil.toNamespaceDescriptor(request.getNamespaceDescriptor()));
return ModifyNamespaceResponse.getDefaultInstance();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public ModifyTableResponse modifyTable(RpcController controller,
ModifyTableRequest req) throws ServiceException {
try {
master.modifyTable(ProtobufUtil.toTableName(req.getTableName()),
HTableDescriptor.convert(req.getTableSchema()));
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return ModifyTableResponse.newBuilder().build();
}
@Override
public MoveRegionResponse moveRegion(RpcController controller,
MoveRegionRequest req) throws ServiceException {
final byte [] encodedRegionName = req.getRegion().getValue().toByteArray();
RegionSpecifierType type = req.getRegion().getType();
final byte [] destServerName = (req.hasDestServerName())?
Bytes.toBytes(ProtobufUtil.toServerName(req.getDestServerName()).getServerName()):null;
MoveRegionResponse mrr = MoveRegionResponse.newBuilder().build();
if (type != RegionSpecifierType.ENCODED_REGION_NAME) {
LOG.warn("moveRegion specifier type: expected: " + RegionSpecifierType.ENCODED_REGION_NAME
+ " actual: " + type);
}
try {
master.checkInitialized();
master.move(encodedRegionName, destServerName);
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return mrr;
}
/**
* Offline specified region from master's in-memory state. It will not attempt to
* reassign the region as in unassign.
*
* This is a special method that should be used by experts or hbck.
*
*/
@Override
public OfflineRegionResponse offlineRegion(RpcController controller,
OfflineRegionRequest request) throws ServiceException {
final byte [] regionName = request.getRegion().getValue().toByteArray();
RegionSpecifierType type = request.getRegion().getType();
if (type != RegionSpecifierType.REGION_NAME) {
LOG.warn("moveRegion specifier type: expected: " + RegionSpecifierType.REGION_NAME
+ " actual: " + type);
}
try {
master.checkInitialized();
Pair<HRegionInfo, ServerName> pair =
MetaTableAccessor.getRegion(master.getConnection(), regionName);
if (pair == null) throw new UnknownRegionException(Bytes.toStringBinary(regionName));
HRegionInfo hri = pair.getFirst();
if (master.cpHost != null) {
master.cpHost.preRegionOffline(hri);
}
LOG.info(master.getClientIdAuditPrefix() + " offline " + hri.getRegionNameAsString());
master.assignmentManager.regionOffline(hri);
if (master.cpHost != null) {
master.cpHost.postRegionOffline(hri);
}
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
return OfflineRegionResponse.newBuilder().build();
}
/**
* Execute Restore/Clone snapshot operation.
*
* <p>If the specified table exists a "Restore" is executed, replacing the table
* schema and directory data with the content of the snapshot.
* The table must be disabled, or a UnsupportedOperationException will be thrown.
*
* <p>If the table doesn't exist a "Clone" is executed, a new table is created
* using the schema at the time of the snapshot, and the content of the snapshot.
*
* <p>The restore/clone operation does not require copying HFiles. Since HFiles
* are immutable the table can point to and use the same files as the original one.
*/
@Override
public RestoreSnapshotResponse restoreSnapshot(RpcController controller,
RestoreSnapshotRequest request) throws ServiceException {
try {
master.checkInitialized();
master.snapshotManager.checkSnapshotSupport();
// ensure namespace exists
TableName dstTable = TableName.valueOf(request.getSnapshot().getTable());
master.getNamespaceDescriptor(dstTable.getNamespaceAsString());
SnapshotDescription reqSnapshot = request.getSnapshot();
master.snapshotManager.restoreSnapshot(reqSnapshot);
return RestoreSnapshotResponse.newBuilder().build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public RunCatalogScanResponse runCatalogScan(RpcController c,
RunCatalogScanRequest req) throws ServiceException {
try {
master.checkInitialized();
return ResponseConverter.buildRunCatalogScanResponse(master.catalogJanitorChore.scan());
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
@Override
public SetBalancerRunningResponse setBalancerRunning(RpcController c,
SetBalancerRunningRequest req) throws ServiceException {
try {
master.checkInitialized();
boolean prevValue = (req.getSynchronous())?
synchronousBalanceSwitch(req.getOn()) : master.balanceSwitch(req.getOn());
return SetBalancerRunningResponse.newBuilder().setPrevBalanceValue(prevValue).build();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
@Override
public ShutdownResponse shutdown(RpcController controller,
ShutdownRequest request) throws ServiceException {
LOG.info(master.getClientIdAuditPrefix() + " shutdown");
master.shutdown();
return ShutdownResponse.newBuilder().build();
}
/**
* Triggers an asynchronous attempt to take a snapshot.
* {@inheritDoc}
*/
@Override
public SnapshotResponse snapshot(RpcController controller,
SnapshotRequest request) throws ServiceException {
try {
master.checkInitialized();
master.snapshotManager.checkSnapshotSupport();
LOG.info(master.getClientIdAuditPrefix() + " snapshot request for:" +
ClientSnapshotDescriptionUtils.toString(request.getSnapshot()));
// get the snapshot information
SnapshotDescription snapshot = SnapshotDescriptionUtils.validate(
request.getSnapshot(), master.getConfiguration());
master.snapshotManager.takeSnapshot(snapshot);
// send back the max amount of time the client should wait for the snapshot to complete
long waitTime = SnapshotDescriptionUtils.getMaxMasterTimeout(master.getConfiguration(),
snapshot.getType(), SnapshotDescriptionUtils.DEFAULT_MAX_WAIT_TIME);
return SnapshotResponse.newBuilder().setExpectedTimeout(waitTime).build();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public StopMasterResponse stopMaster(RpcController controller,
StopMasterRequest request) throws ServiceException {
LOG.info(master.getClientIdAuditPrefix() + " stop");
master.stopMaster();
return StopMasterResponse.newBuilder().build();
}
@Override
public UnassignRegionResponse unassignRegion(RpcController controller,
UnassignRegionRequest req) throws ServiceException {
try {
final byte [] regionName = req.getRegion().getValue().toByteArray();
RegionSpecifierType type = req.getRegion().getType();
final boolean force = req.getForce();
UnassignRegionResponse urr = UnassignRegionResponse.newBuilder().build();
master.checkInitialized();
if (type != RegionSpecifierType.REGION_NAME) {
LOG.warn("unassignRegion specifier type: expected: " + RegionSpecifierType.REGION_NAME
+ " actual: " + type);
}
Pair<HRegionInfo, ServerName> pair =
MetaTableAccessor.getRegion(master.getConnection(), regionName);
if (pair == null) throw new UnknownRegionException(Bytes.toString(regionName));
HRegionInfo hri = pair.getFirst();
if (master.cpHost != null) {
if (master.cpHost.preUnassign(hri, force)) {
return urr;
}
}
LOG.debug(master.getClientIdAuditPrefix() + " unassign " + hri.getRegionNameAsString()
+ " in current location if it is online and reassign.force=" + force);
master.assignmentManager.unassign(hri, force);
if (master.assignmentManager.getRegionStates().isRegionOffline(hri)) {
LOG.debug("Region " + hri.getRegionNameAsString()
+ " is not online on any region server, reassigning it.");
master.assignRegion(hri);
}
if (master.cpHost != null) {
master.cpHost.postUnassign(hri, force);
}
return urr;
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
@Override
public ReportRegionStateTransitionResponse reportRegionStateTransition(RpcController c,
ReportRegionStateTransitionRequest req) throws ServiceException {
try {
master.checkServiceStarted();
RegionStateTransition rt = req.getTransition(0);
TableName tableName = ProtobufUtil.toTableName(
rt.getRegionInfo(0).getTableName());
RegionStates regionStates = master.assignmentManager.getRegionStates();
if (!(TableName.META_TABLE_NAME.equals(tableName)
&& regionStates.getRegionState(HRegionInfo.FIRST_META_REGIONINFO) != null)
&& !master.assignmentManager.isFailoverCleanupDone()) {
// Meta region is assigned before master finishes the
// failover cleanup. So no need this check for it
throw new PleaseHoldException("Master is rebuilding user regions");
}
ServerName sn = ProtobufUtil.toServerName(req.getServer());
String error = master.assignmentManager.onRegionTransition(sn, rt);
ReportRegionStateTransitionResponse.Builder rrtr =
ReportRegionStateTransitionResponse.newBuilder();
if (error != null) {
rrtr.setErrorMessage(error);
}
return rrtr.build();
} catch (IOException ioe) {
throw new ServiceException(ioe);
}
}
}