org.apache.hadoop.hbase.client

类 DelegatingRetryingCallable<T,D extends RetryingCallable<T>>

java.lang.Object

org.apache.hadoop.hbase.client.DelegatingRetryingCallable<T,D>

类型参数:

T - Result class from calls to the delegate RetryingCallable

D - Type of the delegate class

所有已实现的接口:

RetryingCallable<T>

@InterfaceAudience.Private
public class DelegatingRetryingCallable<T,D extends RetryingCallable<T>>
extends Object
implements RetryingCallable<T>

Helper callable for internal use when you just want to override a single method of a RetryingCallable. By default, this just delegates all RetryingCallable methods to the specified delegate.

字段概要

字段

限定符和类型	字段和说明
protected D	delegate

构造器概要

构造器

构造器和说明
DelegatingRetryingCallable(D delegate)

方法概要

方法

限定符和类型	方法和说明
T	call(int callTimeout) Computes a result, or throws an exception if unable to do so.
String	getExceptionMessageAdditionalDetail()
void	prepare(boolean reload) Prepare by setting up any connections to servers, etc., ahead of RetryingCallable.call(int) invocation.
long	sleep(long pause, int tries)
void	throwable(Throwable t, boolean retrying) Called when RetryingCallable.call(int) throws an exception and we are going to retry; take action to make it so we succeed on next call (clear caches, do relookup of locations, etc.).

从类继承的方法 java.lang.Object

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

字段详细资料

delegate

protected final D extends RetryingCallable<T> delegate

构造器详细资料

DelegatingRetryingCallable

public DelegatingRetryingCallable(D delegate)

方法详细资料

call

public T call(int callTimeout)
       throws Exception

从接口复制的说明: RetryingCallable

Computes a result, or throws an exception if unable to do so.

指定者:

call 在接口中 RetryingCallable<T>

参数:

callTimeout - - the time available for this call. 0 for infinite.

返回:

computed result

抛出:

Exception - if unable to compute a result

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 RetryingCallable.call(int) invocation.

指定者:

prepare 在接口中 RetryingCallable<T>

参数:

reload - Set this to true if need to requery locations

抛出:

IOException - e

throwable

public void throwable(Throwable t,
             boolean retrying)

从接口复制的说明: RetryingCallable

Called when RetryingCallable.call(int) throws an exception and we are going to retry; take action to make it so we succeed on next call (clear caches, do relookup of locations, etc.).

指定者:

throwable 在接口中 RetryingCallable<T>

retrying - True if we are in retrying mode (we are not in retrying mode when max retries == 1; we ARE in retrying mode if retries > 1 even when we are the last attempt)

getExceptionMessageAdditionalDetail

public String getExceptionMessageAdditionalDetail()

指定者:

getExceptionMessageAdditionalDetail 在接口中 RetryingCallable<T>

返回:

Some details from the implementation that we would like to add to a terminating exception; i.e. a fatal exception is being thrown ending retries and we might like to add more implementation-specific detail on to the exception being thrown.

sleep

public long sleep(long pause,
         int tries)

指定者:

sleep 在接口中 RetryingCallable<T>

返回:

Suggestion on how much to sleep between retries