org.apache.hadoop.hbase.regionserver
Class HRegionServer

java.lang.Object
  org.apache.hadoop.hbase.regionserver.HRegionServer

All Implemented Interfaces:

Runnable, HBaseRPCErrorHandler, PriorityFunction, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface, LastSequenceId, RegionServerServices

@InterfaceAudience.Private
public class HRegionServer
extends Object
implements org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface, Runnable, RegionServerServices, HBaseRPCErrorHandler, LastSequenceId

HRegionServer makes a set of HRegions available to clients. It checks in with the HMaster. There are many HRegionServers in a single HBase deployment.

Nested Class Summary

protected static class	HRegionServer.MovedRegionsCleaner Creates a Chore thread to clean the moved region cache.
protected static interface	HRegionServer.QosPriority

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.regionserver.RegionServerServices

RegionServerServices.PostOpenDeployContext, RegionServerServices.RegionStateTransitionContext

Field Summary

protected boolean	abortRequested
protected org.apache.hadoop.hbase.regionserver.MemStoreFlusher	cacheFlusher
protected CatalogTracker	catalogTracker
protected static String	CLOSE
CompactSplitThread	compactSplitThread
protected org.apache.hadoop.conf.Configuration	conf
protected HFileSystem	fs
protected boolean	fsOk
protected HLog	hlog
protected HLog	hlogForMeta
protected HeapMemoryManager	hMemManager
protected boolean	isOnline
protected Leases	leases
protected ReentrantReadWriteLock	lock
static org.apache.commons.logging.Log	LOG
protected long	maxScannerResultSize
protected Map<String,org.apache.hadoop.hbase.regionserver.HRegionServer.MovedRegionInfo>	movedRegions
protected int	numRegionsToReport
protected Map<String,HRegion>	onlineRegions Map of regions currently being served by this region server.
protected static String	OPEN
protected Map<String,HRegion>	recoveringRegions Set of regions currently being in recovering state which means it can accept writes(edits from previous failed region server) but not reads.
static String	REGION_SERVER_RPC_SCHEDULER_FACTORY_CLASS RPC scheduler to use for the region server.
protected Map<String,InetSocketAddress[]>	regionFavoredNodesMap Map of encoded region names to the DataNode locations they should be hosted on We store the value as InetSocketAddress since this is used only in HDFS API (create() that takes favored nodes as hints for placing file blocks).
static String	REGIONSERVER region server process name
static String	REGIONSERVER_CONF region server configuration name
protected ConcurrentMap<byte[],Boolean>	regionsInTransitionInRS
protected ReplicationSinkService	replicationSinkHandler
protected ReplicationSourceService	replicationSourceHandler
protected ExecutorService	service
protected boolean	stopped
protected TableDescriptors	tableDescriptors Go here to get table descriptors.
protected int	threadWakeFrequency

Constructor Summary

HRegionServer(org.apache.hadoop.conf.Configuration conf)
Starts a HRegionServer at the default location

Method Summary

void	abort(String reason)
void	abort(String reason, Throwable cause) Cause the server to exit without closing the regions it is serving, the log it is using and without notifying the master.
protected long	addScanner(RegionScanner s, HRegion r)
protected void	addToMovedRegions(String encodedName, ServerName destination, long closeSeqNum)
void	addToOnlineRegions(HRegion region) Add to online regions.
protected Result	append(HRegion region, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto m, CellScanner cellScanner, long nonceGroup) Execute an append mutation.
org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileResponse	bulkLoadHFile(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileRequest request) Atomically bulk load several HFiles into an open region
boolean	checkFileSystem() Checks to see if the file system is still accessible.
boolean	checkOOME(Throwable e) Take actions on the event of an OutOfMemoryError.
protected void	checkOpen() Called to verify that this server is up and running.
protected void	cleanMovedRegions() Remove the expired entries from the moved regions list.
protected Throwable	cleanup(Throwable t)
protected Throwable	cleanup(Throwable t, String msg)
protected void	closeAllRegions(boolean abort) Closes all regions.
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionResponse	closeRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionRequest request) Close a region on the region server.
protected boolean	closeRegion(String encodedName, boolean abort, boolean zk, int versionOfClosingNode, ServerName sn) Close asynchronously a region, can be called from the master or internally by the regionserver when stopping.
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CompactRegionResponse	compactRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CompactRegionRequest request) Compact a region on the region server.
static HRegionServer	constructRegionServer(Class<? extends HRegionServer> regionServerClass, org.apache.hadoop.conf.Configuration conf2) Utility for constructing an instance of the passed HRegionServer class.
protected IOException	convertThrowableToIOE(Throwable t, String msg)
org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionLoad	createRegionLoad(String encodedRegionName)
protected ServerName	createRegionServerStatusStub() Get the current master from ZooKeeper and open the RPC connection to it.
protected void	doBatchOp(org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionActionResult.Builder builder, HRegion region, List<org.apache.hadoop.hbase.protobuf.generated.ClientProtos.Action> mutations, CellScanner cells) Execute a list of Put/Delete mutations.
protected OperationStatus[]	doReplayBatchOp(HRegion region, List<HLogSplitter.MutationReplay> mutations) Execute a list of Put/Delete mutations.
org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceResponse	execRegionServerService(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceRequest serviceRequest)
org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceResponse	execService(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceRequest request)
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.FlushRegionResponse	flushRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.FlushRegionRequest request) Flush a region on the region server.
org.apache.hadoop.hbase.protobuf.generated.ClientProtos.GetResponse	get(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.GetRequest request) Get data from a table.
CacheConfig	getCacheConfig()
CatalogTracker	getCatalogTracker()
double	getCompactionPressure()
CompactionRequestor	getCompactionRequester()
CompactSplitThread	getCompactSplitThread()
org.apache.hadoop.conf.Configuration	getConfiguration()
RegionServerCoprocessorHost	getCoprocessorHost()
String[]	getCoprocessors()
ExecutorService	getExecutorService()
InetSocketAddress[]	getFavoredNodesForRegion(String encodedRegionName) Return the favored nodes for a region given its encoded name.
org.apache.hadoop.fs.FileSystem	getFileSystem()
FlushRequester	getFlushRequester()
HRegion	getFromOnlineRegions(String encodedRegionName) Return HRegion instance.
HeapMemoryManager	getHeapMemoryManager()
static String	getHostname(org.apache.hadoop.conf.Configuration conf)
InfoServer	getInfoServer()
long	getLastSequenceId(byte[] encodedRegionName)
Leases	getLeases()
protected org.apache.hadoop.hbase.regionserver.LogRoller	getLogRoller()
MasterAddressTracker	getMasterAddressTracker()
protected List<WALActionsListener>	getMetaWALActionListeners()
MetricsRegionServer	getMetrics()
protected HRegionInfo[]	getMostLoadedRegions() Get the top N most loaded regions this server is serving so we can tell the master which regions it can reallocate if we're overloaded.
ServerNonceManager	getNonceManager() Only required for "old" log replay; if it's removed, remove this.
int	getNumberOfOnlineRegions()
HRegion	getOnlineRegion(byte[] regionName)
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionResponse	getOnlineRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionRequest request)
List<HRegion>	getOnlineRegions(TableName tableName) Gets the online regions of the specified table.
Collection<HRegion>	getOnlineRegionsLocalContext() For tests, web ui and metrics.
int	getPriority(org.apache.hadoop.hbase.protobuf.generated.RPCProtos.RequestHeader header, com.google.protobuf.Message param)
Map<String,HRegion>	getRecoveringRegions()
protected HRegion	getRegion(byte[] regionName) Protected utility method for safely obtaining an HRegion handle.
protected HRegion	getRegion(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier regionSpecifier) Find the HRegion based on a region specifier
InetSocketAddress[]	getRegionBlockLocations(String encodedRegionName)
protected HRegion	getRegionByEncodedName(byte[] regionName, String encodedRegionName)
protected HRegion	getRegionByEncodedName(String encodedRegionName)
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoResponse	getRegionInfo(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoRequest request)
RegionServerAccounting	getRegionServerAccounting()
ConcurrentMap<byte[],Boolean>	getRegionsInTransitionInRS() Get the regions that are currently being opened or closed in the RS
ReplicationSinkService	getReplicationSinkService()
ReplicationSourceService	getReplicationSourceService()
protected org.apache.hadoop.fs.Path	getRootDir()
RpcServerInterface	getRpcServer() Returns a reference to the region server's RPC server
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetServerInfoResponse	getServerInfo(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetServerInfoRequest request) Get some information of the region server.
ServerName	getServerName()
long	getStartcode()
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetStoreFileResponse	getStoreFile(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetStoreFileRequest request)
TableLockManager	getTableLockManager()
int	getThreadWakeFrequency() Interval at which threads should run
HLog	getWAL()
HLog	getWAL(HRegionInfo regionInfo)
protected List<WALActionsListener>	getWALActionListeners() Called by instantiateHLog(Path, String) setting up WAL instance.
ZooKeeperWatcher	getZooKeeper()
ZooKeeperWatcher	getZooKeeperWatcher()
protected void	handleReportForDutyResponse(org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStartupResponse c)
protected Result	increment(HRegion region, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto mutation, CellScanner cells, long nonceGroup) Execute an increment mutation.
protected HLog	instantiateHLog(org.apache.hadoop.fs.Path rootdir, String logName) Called by setupWALAndReplication() creating WAL instance.
boolean	isAborted()
boolean	isOnline() Report the status of the server.
boolean	isStopped()
boolean	isStopping()
protected void	join() Wait on all threads to finish.
protected void	kill()
static void	main(String[] args)
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.MergeRegionsResponse	mergeRegions(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.MergeRegionsRequest request) Merge regions on the region server.
org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiResponse	multi(com.google.protobuf.RpcController rpcc, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiRequest request) Execute multiple actions on a table: get, mutate, and/or execCoprocessor
org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateResponse	mutate(com.google.protobuf.RpcController rpcc, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateRequest request) Mutate data in a table.
protected org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionLoadStats	mutateRows(HRegion region, List<org.apache.hadoop.hbase.protobuf.generated.ClientProtos.Action> actions, CellScanner cellScanner) Mutate a list of rows atomically.
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionResponse	openRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest request) Open asynchronously a region or a set of regions on the region server.
void	postOpenDeployTasks(HRegion r, CatalogTracker ct) Tasks to perform after region open to complete deploy of region on regionserver
void	postOpenDeployTasks(RegionServerServices.PostOpenDeployContext context, CatalogTracker ct) Tasks to perform after region open to complete deploy of region on regionserver
boolean	registerService(com.google.protobuf.Service instance) Registers a new protocol buffer Service subclass as a coprocessor endpoint to be available for handling
boolean	removeFromOnlineRegions(HRegion r, ServerName destination) This method removes HRegion corresponding to hri from the Map of onlineRegions.
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryResponse	replay(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryRequest request) Replay the given changes when distributedLogReplay WAL edits from a failed RS.
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryResponse	replicateWALEntry(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryRequest request) Replicate WAL entries on the region server.
boolean	reportRegionStateTransition(RegionServerServices.RegionStateTransitionContext context) Notify master that a handler requests to change a region state
boolean	reportRegionStateTransition(org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode code, HRegionInfo... hris) Notify master that a handler requests to change a region state
boolean	reportRegionStateTransition(org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode code, long openSeqNum, HRegionInfo... hris) Notify master that a handler requests to change a region state
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterResponse	rollWALWriter(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterRequest request) Roll the WAL writer of the region server.
void	run() The HRegionServer sticks in this loop until closed.
org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanResponse	scan(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest request) Scan data in a table.
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionResponse	splitRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionRequest request) Split a region on the region server.
static Thread	startRegionServer(HRegionServer hrs)
static Thread	startRegionServer(HRegionServer hrs, String name)
void	stop(String msg)
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse	stopServer(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest request) Stop the region server.
String	toString()
protected void	tryRegionServerReport(long reportStartTime, long reportEndTime)
org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse	updateFavoredNodes(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest request)
void	updateRegionFavoredNodesMapping(String encodedRegionName, List<org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName> favoredNodes) Used to update the favored nodes mapping when required.
void	waitForServerOnline()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

OPEN

protected static final String OPEN

See Also:

Constant Field Values

CLOSE

protected static final String CLOSE

See Also:

Constant Field Values

regionsInTransitionInRS

protected final ConcurrentMap<byte[],Boolean> regionsInTransitionInRS

REGION_SERVER_RPC_SCHEDULER_FACTORY_CLASS

public static final String REGION_SERVER_RPC_SCHEDULER_FACTORY_CLASS

RPC scheduler to use for the region server.

See Also:

Constant Field Values

maxScannerResultSize

protected long maxScannerResultSize

cacheFlusher

protected org.apache.hadoop.hbase.regionserver.MemStoreFlusher cacheFlusher

hMemManager

protected HeapMemoryManager hMemManager

catalogTracker

protected CatalogTracker catalogTracker

tableDescriptors

protected TableDescriptors tableDescriptors

Go here to get table descriptors.

replicationSourceHandler

protected ReplicationSourceService replicationSourceHandler

replicationSinkHandler

protected ReplicationSinkService replicationSinkHandler

compactSplitThread

public CompactSplitThread compactSplitThread

onlineRegions

protected final Map<String,HRegion> onlineRegions

Map of regions currently being served by this region server. Key is the encoded region name. All access should be synchronized.

regionFavoredNodesMap

protected final Map<String,InetSocketAddress[]> regionFavoredNodesMap

Map of encoded region names to the DataNode locations they should be hosted on We store the value as InetSocketAddress since this is used only in HDFS API (create() that takes favored nodes as hints for placing file blocks). We could have used ServerName here as the value class, but we'd need to convert it to InetSocketAddress at some point before the HDFS API call, and it seems a bit weird to store ServerName since ServerName refers to RegionServers and here we really mean DataNode locations.

recoveringRegions

protected final Map<String,HRegion> recoveringRegions

Set of regions currently being in recovering state which means it can accept writes(edits from previous failed region server) but not reads. A recovering region is also an online region.

leases

protected Leases leases

service

protected ExecutorService service

fsOk

protected volatile boolean fsOk

fs

protected HFileSystem fs

stopped

protected volatile boolean stopped

abortRequested

protected volatile boolean abortRequested

conf

protected final org.apache.hadoop.conf.Configuration conf

lock

protected final ReentrantReadWriteLock lock

threadWakeFrequency

protected final int threadWakeFrequency

numRegionsToReport

protected final int numRegionsToReport

REGIONSERVER

public static final String REGIONSERVER

region server process name

See Also:

Constant Field Values

REGIONSERVER_CONF

public static final String REGIONSERVER_CONF

region server configuration name

See Also:

Constant Field Values

hlog

protected volatile HLog hlog

hlogForMeta

protected volatile HLog hlogForMeta

isOnline

protected volatile boolean isOnline

movedRegions

protected Map<String,org.apache.hadoop.hbase.regionserver.HRegionServer.MovedRegionInfo> movedRegions

Constructor Detail

HRegionServer

public HRegionServer(org.apache.hadoop.conf.Configuration conf)
              throws IOException,
                     InterruptedException

Starts a HRegionServer at the default location

Parameters:

conf -

Throws:

IOException

InterruptedException

Method Detail

getHostname

public static String getHostname(org.apache.hadoop.conf.Configuration conf)
                          throws UnknownHostException

Throws:

UnknownHostException

registerService

public boolean registerService(com.google.protobuf.Service instance)

Description copied from interface: RegionServerServices

Registers a new protocol buffer Service subclass as a coprocessor endpoint to be available for handling

Specified by:

registerService in interface RegionServerServices

Returns:

true if the registration was successful, false

getPriority

public int getPriority(org.apache.hadoop.hbase.protobuf.generated.RPCProtos.RequestHeader header,
                       com.google.protobuf.Message param)

Specified by:

getPriority in interface PriorityFunction

Returns:

Priority of this request.

run

public void run()

The HRegionServer sticks in this loop until closed.

Specified by:

run in interface Runnable

tryRegionServerReport

protected void tryRegionServerReport(long reportStartTime,
                                     long reportEndTime)
                              throws IOException

Throws:

IOException

handleReportForDutyResponse

protected void handleReportForDutyResponse(org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionServerStartupResponse c)
                                    throws IOException

Throws:

IOException

getRegionServerAccounting

public RegionServerAccounting getRegionServerAccounting()

Specified by:

getRegionServerAccounting in interface RegionServerServices

Returns:

the RegionServerAccounting for this Region Server

getTableLockManager

public TableLockManager getTableLockManager()

Specified by:

getTableLockManager in interface RegionServerServices

Returns:

RegionServer's instance of TableLockManager

createRegionLoad

public org.apache.hadoop.hbase.protobuf.generated.ClusterStatusProtos.RegionLoad createRegionLoad(String encodedRegionName)

Parameters:

encodedRegionName -

Returns:

An instance of RegionLoad.

isOnline

public boolean isOnline()

Report the status of the server. A server is online once all the startup is completed (setting up filesystem, starting service threads, etc.). This method is designed mostly to be useful in tests.

Returns:

true if online, false if not.

instantiateHLog

protected HLog instantiateHLog(org.apache.hadoop.fs.Path rootdir,
                               String logName)
                        throws IOException

Called by setupWALAndReplication() creating WAL instance.

Parameters:

rootdir -

logName -

Returns:

WAL instance.

Throws:

IOException

getWALActionListeners

protected List<WALActionsListener> getWALActionListeners()

Called by instantiateHLog(Path, String) setting up WAL instance. Add any WALActionsListeners you want inserted before WAL startup.

Returns:

List of WALActionsListener that will be passed in to FSHLog on construction.

getMetaWALActionListeners

protected List<WALActionsListener> getMetaWALActionListeners()

getLogRoller

protected org.apache.hadoop.hbase.regionserver.LogRoller getLogRoller()

getMetrics

public MetricsRegionServer getMetrics()

getMasterAddressTracker

public MasterAddressTracker getMasterAddressTracker()

Returns:

Master address tracker instance.

getWAL

public HLog getWAL()

getWAL

public HLog getWAL(HRegionInfo regionInfo)
            throws IOException

Specified by:

getWAL in interface RegionServerServices

Returns:

the HLog for a particular region. Pass null for getting the default (common) WAL

Throws:

IOException

getCatalogTracker

public CatalogTracker getCatalogTracker()

Specified by:

getCatalogTracker in interface RegionServerServices

Returns:

The RegionServer's CatalogTracker

stop

public void stop(String msg)

waitForServerOnline

public void waitForServerOnline()

postOpenDeployTasks

public void postOpenDeployTasks(HRegion r,
                                CatalogTracker ct)
                         throws org.apache.zookeeper.KeeperException,
                                IOException

Description copied from interface: RegionServerServices

Tasks to perform after region open to complete deploy of region on regionserver

Specified by:

postOpenDeployTasks in interface RegionServerServices

Parameters:

r - Region to open.

ct - catalog tracker

Throws:

org.apache.zookeeper.KeeperException

IOException

postOpenDeployTasks

public void postOpenDeployTasks(RegionServerServices.PostOpenDeployContext context,
                                CatalogTracker ct)
                         throws org.apache.zookeeper.KeeperException,
                                IOException

Description copied from interface: RegionServerServices

Tasks to perform after region open to complete deploy of region on regionserver

Specified by:

postOpenDeployTasks in interface RegionServerServices

Parameters:

context - the context

ct - catalog tracker

Throws:

org.apache.zookeeper.KeeperException

IOException

getRpcServer

public RpcServerInterface getRpcServer()

Description copied from interface: RegionServerServices

Returns a reference to the region server's RPC server

Specified by:

getRpcServer in interface RegionServerServices

abort

public void abort(String reason,
                  Throwable cause)

Cause the server to exit without closing the regions it is serving, the log it is using and without notifying the master. Used unit testing and on catastrophic events such as HDFS is yanked out from under hbase or we OOME.

Parameters:

reason - the reason we are aborting

cause - the exception that caused the abort, or null

abort

public void abort(String reason)

See Also:

abort(String, Throwable)

isAborted

public boolean isAborted()

kill

protected void kill()

join

protected void join()

Wait on all threads to finish. Presumption is that all closes and stops have already been called.

reportRegionStateTransition

public boolean reportRegionStateTransition(org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode code,
                                           HRegionInfo... hris)

Description copied from interface: RegionServerServices

Notify master that a handler requests to change a region state

Specified by:

reportRegionStateTransition in interface RegionServerServices

reportRegionStateTransition

public boolean reportRegionStateTransition(org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode code,
                                           long openSeqNum,
                                           HRegionInfo... hris)

Description copied from interface: RegionServerServices

Notify master that a handler requests to change a region state

Specified by:

reportRegionStateTransition in interface RegionServerServices

reportRegionStateTransition

public boolean reportRegionStateTransition(RegionServerServices.RegionStateTransitionContext context)

Description copied from interface: RegionServerServices

Notify master that a handler requests to change a region state

Specified by:

reportRegionStateTransition in interface RegionServerServices

createRegionServerStatusStub

protected ServerName createRegionServerStatusStub()

Get the current master from ZooKeeper and open the RPC connection to it. To get a fresh connection, the current rssStub must be null. Method will block until a master is available. You can break from this block by requesting the server stop.

Returns:

master + port, or null if server has been stopped

getLastSequenceId

public long getLastSequenceId(byte[] encodedRegionName)

Specified by:

getLastSequenceId in interface LastSequenceId

Parameters:

encodedRegionName - Encoded region name

Returns:

Last flushed sequence Id for region or -1 if it can't be determined

closeAllRegions

protected void closeAllRegions(boolean abort)

Closes all regions. Called on our way out. Assumes that its not possible for new regions to be added to onlineRegions while this method runs.

getInfoServer

public InfoServer getInfoServer()

Returns:

the info server

isStopped

public boolean isStopped()

Returns:

true if a stop has been requested.

isStopping

public boolean isStopping()

Specified by:

isStopping in interface RegionServerServices

Returns:

True if this regionserver is stopping.

getRecoveringRegions

public Map<String,HRegion> getRecoveringRegions()

Specified by:

getRecoveringRegions in interface RegionServerServices

Returns:

set of recovering regions on the hosting region server

getConfiguration

public org.apache.hadoop.conf.Configuration getConfiguration()

Returns:

the configuration

getNumberOfOnlineRegions

public int getNumberOfOnlineRegions()

getOnlineRegionsLocalContext

public Collection<HRegion> getOnlineRegionsLocalContext()

For tests, web ui and metrics. This method will only work if HRegionServer is in the same JVM as client; HRegion cannot be serialized to cross an rpc.

addToOnlineRegions

public void addToOnlineRegions(HRegion region)

Add to online regions.

getStartcode

public long getStartcode()

Returns:

time stamp in millis of when this region server was started

getFlushRequester

public FlushRequester getFlushRequester()

Specified by:

getFlushRequester in interface RegionServerServices

Returns:

reference to FlushRequester

getMostLoadedRegions

protected HRegionInfo[] getMostLoadedRegions()

Get the top N most loaded regions this server is serving so we can tell the master which regions it can reallocate if we're overloaded. TODO: actually calculate which regions are most loaded. (Right now, we're just grabbing the first N regions being served regardless of load.)

getLeases

public Leases getLeases()

Specified by:

getLeases in interface RegionServerServices

Returns:

The RegionServer's "Leases" service

getRootDir

protected org.apache.hadoop.fs.Path getRootDir()

Returns:

Return the rootDir.

getFileSystem

public org.apache.hadoop.fs.FileSystem getFileSystem()

Specified by:

getFileSystem in interface RegionServerServices

Returns:

Return the fs.

toString

public String toString()

Overrides:

toString in class Object

getThreadWakeFrequency

public int getThreadWakeFrequency()

Interval at which threads should run

Returns:

the interval

getZooKeeper

public ZooKeeperWatcher getZooKeeper()

getServerName

public ServerName getServerName()

getCompactionRequester

public CompactionRequestor getCompactionRequester()

Specified by:

getCompactionRequester in interface RegionServerServices

Returns:

Implementation of CompactionRequestor or null.

getZooKeeperWatcher

public ZooKeeperWatcher getZooKeeperWatcher()

getCoprocessorHost

public RegionServerCoprocessorHost getCoprocessorHost()

getRegionsInTransitionInRS

public ConcurrentMap<byte[],Boolean> getRegionsInTransitionInRS()

Description copied from interface: RegionServerServices

Get the regions that are currently being opened or closed in the RS

Specified by:

getRegionsInTransitionInRS in interface RegionServerServices

Returns:

map of regions in transition in this RS

getExecutorService

public ExecutorService getExecutorService()

Specified by:

getExecutorService in interface RegionServerServices

Returns:

hbase executor service

startRegionServer

public static Thread startRegionServer(HRegionServer hrs)
                                throws IOException

Parameters:

hrs -

Returns:

Thread the RegionServer is running in correctly named.

Throws:

IOException

startRegionServer

public static Thread startRegionServer(HRegionServer hrs,
                                       String name)
                                throws IOException

Parameters:

hrs -

name -

Returns:

Thread the RegionServer is running in correctly named.

Throws:

IOException

constructRegionServer

public static HRegionServer constructRegionServer(Class<? extends HRegionServer> regionServerClass,
                                                  org.apache.hadoop.conf.Configuration conf2)

Utility for constructing an instance of the passed HRegionServer class.

Parameters:

regionServerClass -

conf2 -

Returns:

HRegionServer instance.

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

See Also:

HRegionServerCommandLine

getOnlineRegions

public List<HRegion> getOnlineRegions(TableName tableName)

Gets the online regions of the specified table. This method looks at the in-memory onlineRegions. It does not go to hbase:meta. Only returns online regions. If a region on this table has been closed during a disable, etc., it will not be included in the returned list. So, the returned list may not necessarily be ALL regions in this table, its all the ONLINE regions in the table.

Parameters:

tableName -

Returns:

Online regions from tableName

getCoprocessors

public String[] getCoprocessors()

checkOpen

protected void checkOpen()
                  throws IOException

Called to verify that this server is up and running.

Throws:

IOException

closeRegion

protected boolean closeRegion(String encodedName,
                              boolean abort,
                              boolean zk,
                              int versionOfClosingNode,
                              ServerName sn)
                       throws NotServingRegionException,
                              RegionAlreadyInTransitionException

Close asynchronously a region, can be called from the master or internally by the regionserver when stopping. If called from the master, the region will update the znode status.

If an opening was in progress, this method will cancel it, but will not start a new close. The coprocessors are not called in this case. A NotServingRegionException exception is thrown.

If a close was in progress, this new request will be ignored, and an exception thrown.

Parameters:

encodedName - Region to close

abort - True if we are aborting

zk - True if we are to update zk about the region close; if the close was orchestrated by master, then update zk. If the close is being run by the regionserver because its going down, don't update zk.

versionOfClosingNode - the version of znode to compare when RS transitions the znode from CLOSING state.

Returns:

True if closed a region.

Throws:

NotServingRegionException - if the region is not online

RegionAlreadyInTransitionException - if the region is already closing

getOnlineRegion

public HRegion getOnlineRegion(byte[] regionName)

Parameters:

regionName -

Returns:

HRegion for the passed binary regionName or null if named region is not member of the online regions.

getRegionBlockLocations

public InetSocketAddress[] getRegionBlockLocations(String encodedRegionName)

getFromOnlineRegions

public HRegion getFromOnlineRegions(String encodedRegionName)

Return HRegion instance. Only works if caller is in same context, in same JVM. HRegion is not serializable.

Returns:

HRegion for the passed encoded encodedRegionName or null if named region is not member of the online regions.

removeFromOnlineRegions

public boolean removeFromOnlineRegions(HRegion r,
                                       ServerName destination)

This method removes HRegion corresponding to hri from the Map of onlineRegions.

Parameters:

r - Region to remove.

destination - Destination, if any, null otherwise.

Returns:

True if we removed a region from online list.

getRegion

protected HRegion getRegion(byte[] regionName)
                     throws NotServingRegionException

Protected utility method for safely obtaining an HRegion handle.

Parameters:

regionName - Name of online HRegion to return

Returns:

HRegion for regionName

Throws:

NotServingRegionException

getRegionByEncodedName

protected HRegion getRegionByEncodedName(String encodedRegionName)
                                  throws NotServingRegionException

Throws:

NotServingRegionException

getRegionByEncodedName

protected HRegion getRegionByEncodedName(byte[] regionName,
                                         String encodedRegionName)
                                  throws NotServingRegionException

Throws:

NotServingRegionException

cleanup

protected Throwable cleanup(Throwable t)

cleanup

protected Throwable cleanup(Throwable t,
                            String msg)

convertThrowableToIOE

protected IOException convertThrowableToIOE(Throwable t,
                                            String msg)

checkOOME

public boolean checkOOME(Throwable e)

Description copied from interface: HBaseRPCErrorHandler

Take actions on the event of an OutOfMemoryError.

Specified by:

checkOOME in interface HBaseRPCErrorHandler

Parameters:

e - the throwable

Returns:

if the server should be shut down

checkFileSystem

public boolean checkFileSystem()

Checks to see if the file system is still accessible. If not, sets abortRequested and stopRequested

Returns:

false if file system is not available

addScanner

protected long addScanner(RegionScanner s,
                          HRegion r)
                   throws Leases.LeaseStillHeldException

Throws:

Leases.LeaseStillHeldException

get

public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.GetResponse get(com.google.protobuf.RpcController controller,
                                                                               org.apache.hadoop.hbase.protobuf.generated.ClientProtos.GetRequest request)
                                                                        throws com.google.protobuf.ServiceException

Get data from a table.

Specified by:

get in interface org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface

Parameters:

controller - the RPC controller

request - the get request

Throws:

com.google.protobuf.ServiceException

mutate

public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateResponse mutate(com.google.protobuf.RpcController rpcc,
                                                                                     org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutateRequest request)
                                                                              throws com.google.protobuf.ServiceException

Mutate data in a table.

Specified by:

mutate in interface org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface

Parameters:

rpcc - the RPC controller

request - the mutate request

Throws:

com.google.protobuf.ServiceException

scan

public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanResponse scan(com.google.protobuf.RpcController controller,
                                                                                 org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ScanRequest request)
                                                                          throws com.google.protobuf.ServiceException

Scan data in a table.

Specified by:

scan in interface org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface

Parameters:

controller - the RPC controller

request - the scan request

Throws:

com.google.protobuf.ServiceException

bulkLoadHFile

public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileResponse bulkLoadHFile(com.google.protobuf.RpcController controller,
                                                                                                   org.apache.hadoop.hbase.protobuf.generated.ClientProtos.BulkLoadHFileRequest request)
                                                                                            throws com.google.protobuf.ServiceException

Atomically bulk load several HFiles into an open region

Specified by:

bulkLoadHFile in interface org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface

Returns:

true if successful, false is failed but recoverably (no action)

Throws:

IOException - if failed unrecoverably

com.google.protobuf.ServiceException

execService

public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceResponse execService(com.google.protobuf.RpcController controller,
                                                                                                      org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceRequest request)
                                                                                               throws com.google.protobuf.ServiceException

Specified by:

execService in interface org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface

Throws:

com.google.protobuf.ServiceException

execRegionServerService

public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceResponse execRegionServerService(com.google.protobuf.RpcController controller,
                                                                                                                  org.apache.hadoop.hbase.protobuf.generated.ClientProtos.CoprocessorServiceRequest serviceRequest)
                                                                                                           throws com.google.protobuf.ServiceException

Specified by:

execRegionServerService in interface org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface

Throws:

com.google.protobuf.ServiceException

getReplicationSourceService

public ReplicationSourceService getReplicationSourceService()

Returns:

Return the object that implements the replication source service.

getReplicationSinkService

public ReplicationSinkService getReplicationSinkService()

Returns:

Return the object that implements the replication sink service.

multi

public org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiResponse multi(com.google.protobuf.RpcController rpcc,
                                                                                   org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MultiRequest request)
                                                                            throws com.google.protobuf.ServiceException

Execute multiple actions on a table: get, mutate, and/or execCoprocessor

Specified by:

multi in interface org.apache.hadoop.hbase.protobuf.generated.ClientProtos.ClientService.BlockingInterface

Parameters:

rpcc - the RPC controller

request - the multi request

Throws:

com.google.protobuf.ServiceException

getRegionInfo

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoResponse getRegionInfo(com.google.protobuf.RpcController controller,
                                                                                                  org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoRequest request)
                                                                                           throws com.google.protobuf.ServiceException

Specified by:

getRegionInfo in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Throws:

com.google.protobuf.ServiceException

getStoreFile

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetStoreFileResponse getStoreFile(com.google.protobuf.RpcController controller,
                                                                                                org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetStoreFileRequest request)
                                                                                         throws com.google.protobuf.ServiceException

Specified by:

getStoreFile in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Throws:

com.google.protobuf.ServiceException

getOnlineRegion

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionResponse getOnlineRegion(com.google.protobuf.RpcController controller,
                                                                                                      org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionRequest request)
                                                                                               throws com.google.protobuf.ServiceException

Specified by:

getOnlineRegion in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Throws:

com.google.protobuf.ServiceException

openRegion

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionResponse openRegion(com.google.protobuf.RpcController controller,
                                                                                            org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest request)
                                                                                     throws com.google.protobuf.ServiceException

Open asynchronously a region or a set of regions on the region server. The opening is coordinated by ZooKeeper, and this method requires the znode to be created before being called. As a consequence, this method should be called only from the master.

Different manages states for the region are:

• region not opened: the region opening will start asynchronously.
• a close is already in progress: this is considered as an error.
• an open is already in progress: this new open request will be ignored. This is important because the Master can do multiple requests if it crashes.
• the region is already opened: this new open request will be ignored./li>

Bulk assign: If there are more than 1 region to open, it will be considered as a bulk assign. For a single region opening, errors are sent through a ServiceException. For bulk assign, errors are put in the response as FAILED_OPENING.

Specified by:

openRegion in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

updateRegionFavoredNodesMapping

public void updateRegionFavoredNodesMapping(String encodedRegionName,
                                            List<org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName> favoredNodes)

Used to update the favored nodes mapping when required.

getFavoredNodesForRegion

public InetSocketAddress[] getFavoredNodesForRegion(String encodedRegionName)

Return the favored nodes for a region given its encoded name. Look at the comment around regionFavoredNodesMap on why it is InetSocketAddress[]

Parameters:

encodedRegionName -

Returns:

array of favored locations

closeRegion

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionResponse closeRegion(com.google.protobuf.RpcController controller,
                                                                                              org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CloseRegionRequest request)
                                                                                       throws com.google.protobuf.ServiceException

Close a region on the region server.

Specified by:

closeRegion in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

flushRegion

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.FlushRegionResponse flushRegion(com.google.protobuf.RpcController controller,
                                                                                              org.apache.hadoop.hbase.protobuf.generated.AdminProtos.FlushRegionRequest request)
                                                                                       throws com.google.protobuf.ServiceException

Flush a region on the region server.

Specified by:

flushRegion in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

splitRegion

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionResponse splitRegion(com.google.protobuf.RpcController controller,
                                                                                              org.apache.hadoop.hbase.protobuf.generated.AdminProtos.SplitRegionRequest request)
                                                                                       throws com.google.protobuf.ServiceException

Split a region on the region server.

Specified by:

splitRegion in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

mergeRegions

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.MergeRegionsResponse mergeRegions(com.google.protobuf.RpcController controller,
                                                                                                org.apache.hadoop.hbase.protobuf.generated.AdminProtos.MergeRegionsRequest request)
                                                                                         throws com.google.protobuf.ServiceException

Merge regions on the region server.

Specified by:

mergeRegions in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Returns:

merge regions response

Throws:

com.google.protobuf.ServiceException

compactRegion

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CompactRegionResponse compactRegion(com.google.protobuf.RpcController controller,
                                                                                                  org.apache.hadoop.hbase.protobuf.generated.AdminProtos.CompactRegionRequest request)
                                                                                           throws com.google.protobuf.ServiceException

Compact a region on the region server.

Specified by:

compactRegion in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

replicateWALEntry

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryResponse replicateWALEntry(com.google.protobuf.RpcController controller,
                                                                                                          org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryRequest request)
                                                                                                   throws com.google.protobuf.ServiceException

Replicate WAL entries on the region server.

Specified by:

replicateWALEntry in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

replay

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryResponse replay(com.google.protobuf.RpcController controller,
                                                                                               org.apache.hadoop.hbase.protobuf.generated.AdminProtos.ReplicateWALEntryRequest request)
                                                                                        throws com.google.protobuf.ServiceException

Replay the given changes when distributedLogReplay WAL edits from a failed RS. The guarantee is that the given mutations will be durable on the receiving RS if this method returns without any exception.

Specified by:

replay in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

rollWALWriter

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterResponse rollWALWriter(com.google.protobuf.RpcController controller,
                                                                                                  org.apache.hadoop.hbase.protobuf.generated.AdminProtos.RollWALWriterRequest request)
                                                                                           throws com.google.protobuf.ServiceException

Roll the WAL writer of the region server.

Specified by:

rollWALWriter in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

stopServer

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerResponse stopServer(com.google.protobuf.RpcController controller,
                                                                                            org.apache.hadoop.hbase.protobuf.generated.AdminProtos.StopServerRequest request)
                                                                                     throws com.google.protobuf.ServiceException

Stop the region server.

Specified by:

stopServer in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

getServerInfo

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetServerInfoResponse getServerInfo(com.google.protobuf.RpcController controller,
                                                                                                  org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetServerInfoRequest request)
                                                                                           throws com.google.protobuf.ServiceException

Get some information of the region server.

Specified by:

getServerInfo in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Parameters:

controller - the RPC controller

request - the request

Throws:

com.google.protobuf.ServiceException

getRegion

protected HRegion getRegion(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionSpecifier regionSpecifier)
                     throws IOException

Find the HRegion based on a region specifier

Parameters:

regionSpecifier - the region specifier

Returns:

the corresponding region

Throws:

IOException - if the specifier is not null, but failed to find the region

append

protected Result append(HRegion region,
                        org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto m,
                        CellScanner cellScanner,
                        long nonceGroup)
                 throws IOException

Execute an append mutation.

Parameters:

region -

m -

cellScanner -

Returns:

result to return to client if default operation should be bypassed as indicated by RegionObserver, null otherwise

Throws:

IOException

increment

protected Result increment(HRegion region,
                           org.apache.hadoop.hbase.protobuf.generated.ClientProtos.MutationProto mutation,
                           CellScanner cells,
                           long nonceGroup)
                    throws IOException

Execute an increment mutation.

Parameters:

region -

mutation -

Returns:

the Result

Throws:

IOException

getNonceManager

public ServerNonceManager getNonceManager()

Description copied from interface: RegionServerServices

Only required for "old" log replay; if it's removed, remove this.

Specified by:

getNonceManager in interface RegionServerServices

Returns:

The RegionServer's NonceManager

doBatchOp

protected void doBatchOp(org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionActionResult.Builder builder,
                         HRegion region,
                         List<org.apache.hadoop.hbase.protobuf.generated.ClientProtos.Action> mutations,
                         CellScanner cells)

Execute a list of Put/Delete mutations.

Parameters:

builder -

region -

mutations -

doReplayBatchOp

protected OperationStatus[] doReplayBatchOp(HRegion region,
                                            List<HLogSplitter.MutationReplay> mutations)
                                     throws IOException

Execute a list of Put/Delete mutations. The function returns OperationStatus instead of constructing MultiResponse to save a possible loop if caller doesn't need MultiResponse.

Parameters:

region -

mutations -

Returns:

an array of OperationStatus which internally contains the OperationStatusCode and the exceptionMessage if any

Throws:

IOException

mutateRows

protected org.apache.hadoop.hbase.protobuf.generated.ClientProtos.RegionLoadStats mutateRows(HRegion region,
                                                                                             List<org.apache.hadoop.hbase.protobuf.generated.ClientProtos.Action> actions,
                                                                                             CellScanner cellScanner)
                                                                                      throws IOException

Mutate a list of rows atomically.

Parameters:

region -

actions -

cellScanner - if non-null, the mutation data -- the Cell content.

Throws:

IOException

addToMovedRegions

protected void addToMovedRegions(String encodedName,
                                 ServerName destination,
                                 long closeSeqNum)

cleanMovedRegions

protected void cleanMovedRegions()

Remove the expired entries from the moved regions list.

getCompactSplitThread

public CompactSplitThread getCompactSplitThread()

Returns:

the underlying CompactSplitThread for the servers

updateFavoredNodes

public org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse updateFavoredNodes(com.google.protobuf.RpcController controller,
                                                                                                            org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest request)
                                                                                                     throws com.google.protobuf.ServiceException

Specified by:

updateFavoredNodes in interface org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface

Throws:

com.google.protobuf.ServiceException

getCacheConfig

public CacheConfig getCacheConfig()

Returns:

The cache config instance used by the regionserver.

getHeapMemoryManager

public HeapMemoryManager getHeapMemoryManager()

Specified by:

getHeapMemoryManager in interface RegionServerServices

Returns:

heap memory manager instance

getCompactionPressure

public double getCompactionPressure()

Specified by:

getCompactionPressure in interface RegionServerServices

Returns:

the max compaction pressure of all stores on this regionserver. The value should be greater than or equal to 0.0, and any value greater than 1.0 means we enter the emergency state that some stores have too many store files.

See Also:

Store.getCompactionPressure()