org.apache.hadoop.hbase.client

类 ReversedScannerCallable

java.lang.Object

org.apache.hadoop.hbase.client.RegionServerCallable<Result[]>

org.apache.hadoop.hbase.client.ScannerCallable

org.apache.hadoop.hbase.client.ReversedScannerCallable

所有已实现的接口:

RetryingCallable<Result[]>

@InterfaceAudience.Private
public class ReversedScannerCallable
extends ScannerCallable

A reversed ScannerCallable which supports backward scanning.

字段概要

从类继承的字段 org.apache.hadoop.hbase.client.ScannerCallable

cConnection, closed, controller, controllerFactory, cursor, heartbeatMessage, id, instantiated, isRegionServerRemote, LOG, LOG_SCANNER_ACTIVITY, LOG_SCANNER_LATENCY_CUTOFF, renew, scan, scanMetrics, scannerId

从类继承的字段 org.apache.hadoop.hbase.client.RegionServerCallable

connection, location, priority, row, tableName

构造器概要

构造器

构造器和说明
ReversedScannerCallable(ClusterConnection connection, TableName tableName, Scan scan, ScanMetrics scanMetrics, RpcControllerFactory rpcFactory)
ReversedScannerCallable(ClusterConnection connection, TableName tableName, Scan scan, ScanMetrics scanMetrics, RpcControllerFactory rpcFactory, int replicaId)

方法概要

方法

限定符和类型	方法和说明
ScannerCallable	getScannerCallableForReplica(int id)
void	prepare(boolean reload) Prepare for connection to the server hosting region with row from tablename.

从类继承的方法 org.apache.hadoop.hbase.client.ScannerCallable

call, checkIfRegionServerIsRemote, getCaching, getConnection, getCursor, getHRegionInfo, getScan, setCaching, setClose, setRenew, updateResultsMetrics

从类继承的方法 org.apache.hadoop.hbase.client.RegionServerCallable

getExceptionMessageAdditionalDetail, getLocation, getPriority, getRow, getStub, getTableName, setLocation, sleep, throwable

从类继承的方法 java.lang.Object

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

构造器详细资料

ReversedScannerCallable

public ReversedScannerCallable(ClusterConnection connection,
                       TableName tableName,
                       Scan scan,
                       ScanMetrics scanMetrics,
                       RpcControllerFactory rpcFactory)

参数:

connection -

tableName -

scan -

scanMetrics -

rpcFactory - to create an RpcController to talk to the regionserver

ReversedScannerCallable

public ReversedScannerCallable(ClusterConnection connection,
                       TableName tableName,
                       Scan scan,
                       ScanMetrics scanMetrics,
                       RpcControllerFactory rpcFactory,
                       int replicaId)

参数:

connection -

tableName -

scan -

scanMetrics -

rpcFactory - to create an RpcController to talk to the regionserver

replicaId - the replica id

方法详细资料

prepare

public void prepare(boolean reload)
             throws IOException

从类复制的说明: RegionServerCallable

Prepare for connection to the server hosting region with row from tablename. Does lookup to find region location and hosting server.

指定者:

prepare 在接口中 RetryingCallable<Result[]>

覆盖:

prepare 在类中 ScannerCallable

参数:

reload - force reload of server location

抛出:

IOException

getScannerCallableForReplica

public ScannerCallable getScannerCallableForReplica(int id)

覆盖:

getScannerCallableForReplica 在类中 ScannerCallable