Package oracle.kv

Class RequestTimeoutException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

oracle.kv.FastExternalizableException

oracle.kv.FaultException

oracle.kv.RequestTimeoutException

All Implemented Interfaces:

java.io.Serializable, oracle.kv.impl.util.FastExternalizable

public class RequestTimeoutException
extends FaultException

Thrown when a request cannot be processed because the configured timeout interval is exceeded.

The default timeout interval (specified by KVStoreConfig.getRequestTimeout(java.util.concurrent.TimeUnit)) is five seconds, and this exception should rarely be thrown.

Note that the durability of an update operation may be uncertain if it results in a RequestTimeoutException being thrown. In most cases, the exception means that the changes requested by the update may or may not have been committed to the master or propagated to one or more replicas. Applications may want to retry the update operation if it is idempotent, or perform read operations to determine the outcome of the previous update.

In the case that an application receives a RequestTimeoutException whose cause is a DurabilityException and calling DurabilityException.getNoSideEffects() returns true, the application can safely assume that none of the changes requested by the operation have been performed and can retry the operation. If getNoSideEffects returns false, then the operation may or may not have had side effects.

Note also that if the consistency specified for a read operation is Consistency.NONE_REQUIRED_NO_MASTER, then this exception will be thrown if the operation is attempted when the only node available is the Master.

Depending on the nature of the application, when this exception is thrown the client may wish to

• retry the operation,
• fall back to using a larger timeout interval, and resume using the original timeout interval at a later time, or
• give up and report an error at a higher level.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method	Description
java.lang.String	getMessage()
int	getTimeoutMs()	Returns the timeout that was in effect for the operation.
void	setTimeoutMs(int timeoutMs)	Sets the timeout that was in effect for the operation.

Methods inherited from class oracle.kv.FaultException

getFaultClassName, getRemoteStackTrace, toString, wasLoggedRemotely

Methods inherited from class java.lang.Object

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

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace

Method Detail

getMessage

public java.lang.String getMessage()

Overrides:

getMessage in class java.lang.Throwable

getTimeoutMs

public int getTimeoutMs()

Returns the timeout that was in effect for the operation.

setTimeoutMs

public void setTimeoutMs(int timeoutMs)

Sets the timeout that was in effect for the operation.