Package org.apache.hadoop.hbase.client

Class RpcRetryingCallerWithReadReplicas.ReplicaRegionServerCallable

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<T>

org.apache.hadoop.hbase.client.CancellableRegionServerCallable<Result>

org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.ReplicaRegionServerCallable

All Implemented Interfaces:

Cancellable, RetryingCallable<Result>

Enclosing class:

RpcRetryingCallerWithReadReplicas

class RpcRetryingCallerWithReadReplicas.ReplicaRegionServerCallable
extends CancellableRegionServerCallable<Result>

A RegionServerCallable that takes into account the replicas, i.e. - the call can be on any replica - we need to stop retrying when the call is completed - we can be interrupted

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final int	id

Fields inherited from class org.apache.hadoop.hbase.client.RegionServerCallable

location, requestAttributes, rpcController, stub

Constructor Summary

Constructors

Constructor	Description
ReplicaRegionServerCallable(int id, HRegionLocation location)

Method Summary

Modifier and Type	Method	Description
void	prepare(boolean reload)	Two responsibilities - if the call is already completed (by another replica) stops the retries.
protected Result	rpcCall()	Run the RPC call.

Methods inherited from class org.apache.hadoop.hbase.client.CancellableRegionServerCallable

call, cancel, doBulkLoadHFile, doCleanupBulkLoad, doMulti, doPrepareBulkLoad, doScan, getTracker, isCancelled, setStubByServiceName

Methods inherited from class org.apache.hadoop.hbase.client.ClientServiceCallable

doGet, doMutate

Methods inherited from class org.apache.hadoop.hbase.client.RegionServerCallable

getConnection, getExceptionMessageAdditionalDetail, getHRegionInfo, getLocation, getPriority, getRow, getRpcController, getRpcControllerCellScanner, getStub, getTableName, setLocation, setRpcControllerCellScanner, setStub, sleep, throwable

Methods inherited from class java.lang.Object

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

Field Details

id

final int id

Constructor Details

ReplicaRegionServerCallable

public ReplicaRegionServerCallable(int id,
 HRegionLocation location)

Method Details

prepare

public void prepare(boolean reload)
             throws IOException

Two responsibilities - if the call is already completed (by another replica) stops the retries. - set the location to the right region, depending on the replica.

Specified by:

prepare in interface RetryingCallable<Result>

Overrides:

prepare in class CancellableRegionServerCallable<Result>

Parameters:

reload - Set this to true if need to requery locations

Throws:

IOException - e

rpcCall

protected Result rpcCall()
                  throws Exception

Description copied from class: RegionServerCallable

Run the RPC call. Implement this method. To get at the rpcController that has been created and configured to make this rpc call, use getRpcController(). We are trying to contain rpcController references so we don't pollute codebase with protobuf references; keep the protobuf references contained and only present in a few classes rather than all about the code base.

Specified by:

rpcCall in class RegionServerCallable<Result,org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService.BlockingInterface>

Throws:

Exception