Package org.apache.accumulo.tserver

Class ScanServer

java.lang.Object

org.apache.accumulo.server.AbstractServer

org.apache.accumulo.tserver.ScanServer

All Implemented Interfaces:

AutoCloseable, Runnable, TabletScanClientService.Iface, TabletHostingServer

public class ScanServer
extends AbstractServer
implements TabletScanClientService.Iface, TabletHostingServer

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ScanServer.ScanServerOpts

Field Summary

Fields

Modifier and Type	Field	Description
protected ThriftScanClientHandler	delegate
protected TabletServerScanMetrics	scanMetrics

Fields inherited from class org.apache.accumulo.server.AbstractServer

applicationName

Constructor Summary

Constructors

Constructor	Description
ScanServer(ScanServer.ScanServerOpts opts, String[] args)

Method Summary

Modifier and Type	Method	Description
void	closeMultiScan(TInfo tinfo, long scanID)
void	closeScan(TInfo tinfo, long scanID)
MultiScanResult	continueMultiScan(TInfo tinfo, long scanID, long busyTimeout)
ScanResult	continueScan(TInfo tinfo, long scanID, long busyTimeout)
List<ActiveScan>	getActiveScans(TInfo tinfo, TCredentials credentials)
protected ScanSession.TabletResolver	getBatchScanTabletResolver(HashMap<KeyExtent,TabletBase> tablets)
BlockCacheConfiguration	getBlockCacheConfiguration(AccumuloConfiguration acuConf)
String	getClientAddressString()
GarbageCollectionLogger	getGcLogger()
protected KeyExtent	getKeyExtent(TKeyExtent textent)
ServiceLock	getLock()
ZooCache	getManagerLockCache()
Tablet	getOnlineTablet(KeyExtent extent)
TabletServerResourceManager	getResourceManager()
TabletServerScanMetrics	getScanMetrics()
protected ScanSession.TabletResolver	getScanTabletResolver(TabletBase tablet)
Session	getSession(long scanID)
SessionManager	getSessionManager()
TableConfiguration	getTableConfiguration(KeyExtent extent)
static void	main(String[] args)
protected ThriftScanClientHandler	newThriftScanClientHandler(WriteTracker writeTracker)
protected org.apache.accumulo.tserver.ScanServer.ScanReservation	reserveFiles(long scanId)
protected org.apache.accumulo.tserver.ScanServer.ScanReservation	reserveFiles(Map<KeyExtent,List<TRange>> extents)
void	run()
InitialMultiScan	startMultiScan(TInfo tinfo, TCredentials credentials, Map<TKeyExtent,List<TRange>> tbatch, List<TColumn> tcolumns, List<IterInfo> ssiList, Map<String,Map<String,String>> ssio, List<ByteBuffer> authorizations, boolean waitForWrites, TSamplerConfiguration tSamplerConfig, long batchTimeOut, String contextArg, Map<String,String> executionHints, long busyTimeout)
InitialScan	startScan(TInfo tinfo, TCredentials credentials, TKeyExtent textent, TRange range, List<TColumn> columns, int batchSize, List<IterInfo> ssiList, Map<String,Map<String,String>> ssio, List<ByteBuffer> authorizations, boolean waitForWrites, boolean isolated, long readaheadThreshold, TSamplerConfiguration samplerConfig, long batchTimeOut, String classLoaderContext, Map<String,String> executionHints, long busyTimeout)
protected ServerAddress	startScanServerClientService()	Start the thrift service to handle incoming client requests

Methods inherited from class org.apache.accumulo.server.AbstractServer

close, getConfiguration, getContext, getHostname, runServer

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.accumulo.tserver.TabletHostingServer

getConfiguration, getContext

Field Detail

delegate

protected ThriftScanClientHandler delegate

scanMetrics

protected TabletServerScanMetrics scanMetrics

Constructor Detail

ScanServer

public ScanServer(ScanServer.ScanServerOpts opts,
                  String[] args)

Method Detail

newThriftScanClientHandler

protected ThriftScanClientHandler newThriftScanClientHandler(WriteTracker writeTracker)

startScanServerClientService

protected ServerAddress startScanServerClientService()
                                              throws UnknownHostException

Start the thrift service to handle incoming client requests

Returns:

address of this client service

Throws:

UnknownHostException - host unknown

getClientAddressString

public String getClientAddressString()

run

public void run()

Specified by:

run in interface Runnable

reserveFiles

protected org.apache.accumulo.tserver.ScanServer.ScanReservation reserveFiles(Map<KeyExtent,List<TRange>> extents)
                                                                       throws AccumuloException

Throws:

AccumuloException

reserveFiles

protected org.apache.accumulo.tserver.ScanServer.ScanReservation reserveFiles(long scanId)
                                                                       throws NoSuchScanIDException

Throws:

NoSuchScanIDException

getKeyExtent

protected KeyExtent getKeyExtent(TKeyExtent textent)

getScanTabletResolver

protected ScanSession.TabletResolver getScanTabletResolver(TabletBase tablet)

getBatchScanTabletResolver

protected ScanSession.TabletResolver getBatchScanTabletResolver(HashMap<KeyExtent,TabletBase> tablets)

startScan

public InitialScan startScan(TInfo tinfo,
                             TCredentials credentials,
                             TKeyExtent textent,
                             TRange range,
                             List<TColumn> columns,
                             int batchSize,
                             List<IterInfo> ssiList,
                             Map<String,Map<String,String>> ssio,
                             List<ByteBuffer> authorizations,
                             boolean waitForWrites,
                             boolean isolated,
                             long readaheadThreshold,
                             TSamplerConfiguration samplerConfig,
                             long batchTimeOut,
                             String classLoaderContext,
                             Map<String,String> executionHints,
                             long busyTimeout)
                      throws ThriftSecurityException,
                             NotServingTabletException,
                             TooManyFilesException,
                             TSampleNotPresentException,
                             org.apache.thrift.TException

Specified by:

startScan in interface TabletScanClientService.Iface

Throws:

ThriftSecurityException

NotServingTabletException

TooManyFilesException

TSampleNotPresentException

org.apache.thrift.TException

continueScan

public ScanResult continueScan(TInfo tinfo,
                               long scanID,
                               long busyTimeout)
                        throws NoSuchScanIDException,
                               NotServingTabletException,
                               TooManyFilesException,
                               TSampleNotPresentException,
                               org.apache.thrift.TException

Specified by:

continueScan in interface TabletScanClientService.Iface

Throws:

NoSuchScanIDException

NotServingTabletException

TooManyFilesException

TSampleNotPresentException

org.apache.thrift.TException

closeScan

public void closeScan(TInfo tinfo,
                      long scanID)
               throws org.apache.thrift.TException

Specified by:

closeScan in interface TabletScanClientService.Iface

Throws:

org.apache.thrift.TException

startMultiScan

public InitialMultiScan startMultiScan(TInfo tinfo,
                                       TCredentials credentials,
                                       Map<TKeyExtent,List<TRange>> tbatch,
                                       List<TColumn> tcolumns,
                                       List<IterInfo> ssiList,
                                       Map<String,Map<String,String>> ssio,
                                       List<ByteBuffer> authorizations,
                                       boolean waitForWrites,
                                       TSamplerConfiguration tSamplerConfig,
                                       long batchTimeOut,
                                       String contextArg,
                                       Map<String,String> executionHints,
                                       long busyTimeout)
                                throws ThriftSecurityException,
                                       TSampleNotPresentException,
                                       org.apache.thrift.TException

Specified by:

startMultiScan in interface TabletScanClientService.Iface

Throws:

ThriftSecurityException

TSampleNotPresentException

org.apache.thrift.TException

continueMultiScan

public MultiScanResult continueMultiScan(TInfo tinfo,
                                         long scanID,
                                         long busyTimeout)
                                  throws NoSuchScanIDException,
                                         TSampleNotPresentException,
                                         org.apache.thrift.TException

Specified by:

continueMultiScan in interface TabletScanClientService.Iface

Throws:

NoSuchScanIDException

TSampleNotPresentException

org.apache.thrift.TException

closeMultiScan

public void closeMultiScan(TInfo tinfo,
                           long scanID)
                    throws NoSuchScanIDException,
                           org.apache.thrift.TException

Specified by:

closeMultiScan in interface TabletScanClientService.Iface

Throws:

NoSuchScanIDException

org.apache.thrift.TException

getActiveScans

public List<ActiveScan> getActiveScans(TInfo tinfo,
                                       TCredentials credentials)
                                throws ThriftSecurityException,
                                       org.apache.thrift.TException

Specified by:

getActiveScans in interface TabletScanClientService.Iface

Throws:

ThriftSecurityException

org.apache.thrift.TException

getOnlineTablet

public Tablet getOnlineTablet(KeyExtent extent)

Specified by:

getOnlineTablet in interface TabletHostingServer

getSessionManager

public SessionManager getSessionManager()

Specified by:

getSessionManager in interface TabletHostingServer

getResourceManager

public TabletServerResourceManager getResourceManager()

Specified by:

getResourceManager in interface TabletHostingServer

getScanMetrics

public TabletServerScanMetrics getScanMetrics()

Specified by:

getScanMetrics in interface TabletHostingServer

getSession

public Session getSession(long scanID)

Specified by:

getSession in interface TabletHostingServer

getTableConfiguration

public TableConfiguration getTableConfiguration(KeyExtent extent)

Specified by:

getTableConfiguration in interface TabletHostingServer

getLock

public ServiceLock getLock()

Specified by:

getLock in interface TabletHostingServer

getManagerLockCache

public ZooCache getManagerLockCache()

Specified by:

getManagerLockCache in interface TabletHostingServer

getGcLogger

public GarbageCollectionLogger getGcLogger()

Specified by:

getGcLogger in interface TabletHostingServer

getBlockCacheConfiguration

public BlockCacheConfiguration getBlockCacheConfiguration(AccumuloConfiguration acuConf)

Specified by:

getBlockCacheConfiguration in interface TabletHostingServer

main

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

Throws:

Exception