org.apache.hadoop.hbase.client

类 ReversedScannerCallable

java.lang.Object

org.apache.hadoop.hbase.client.RegionServerCallable<T,org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService.BlockingInterface>

org.apache.hadoop.hbase.client.ClientServiceCallable<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

closed, cursor, heartbeatMessage, id, instantiated, isRegionServerRemote, LOG, LOG_SCANNER_ACTIVITY, LOG_SCANNER_LATENCY_CUTOFF, renew, rpcControllerFactory, scan, scanMetrics, scannerId

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

location, rpcController, stub

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

限定符和类型	方法和说明
ScannerCallable	getScannerCallableForReplica(int id)
void	prepare(boolean reload) Prepare by setting up any connections to servers, etc., ahead of call invocation.

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

checkIfRegionServerIsRemote, getCaching, getCursor, getHRegionInfo, getScan, rpcCall, setCaching, setClose, setRenew

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

doGet, doMutate, setStubByServiceName

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

call, getConnection, getExceptionMessageAdditionalDetail, getLocation, getPriority, getRow, getRpcController, getRpcControllerCellScanner, getStub, getTableName, setLocation, setRpcControllerCellScanner, setStub, 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

从接口复制的说明: RetryingCallable

Prepare by setting up any connections to servers, etc., ahead of call invocation. TODO: We call prepare before EVERY call. Seems wrong. FIX!!!!

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