com.datastax.driver.core.exceptions

Class NoHostAvailableException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

com.datastax.driver.core.exceptions.DriverException

com.datastax.driver.core.exceptions.NoHostAvailableException

All Implemented Interfaces:

Serializable

public class NoHostAvailableException
extends DriverException

Exception thrown when a query cannot be performed because no host are available. This exception is thrown if

• either there is no host live in the cluster at the moment of the query
• all host that have been tried have failed due to a connection problem

For debugging purpose, the list of hosts that have been tried along with the failure cause can be retrieved using the errors method.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NoHostAvailableException(Map<InetAddress,String> errors)

Method Summary

Methods

Modifier and Type	Method and Description
DriverException	copy() Copy the exception.
Map<InetAddress,String>	getErrors() Return the hosts tried along with descriptions of the error encountered while trying them.

Methods inherited from class java.lang.Throwable

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

Methods inherited from class java.lang.Object

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

Constructor Detail

NoHostAvailableException

public NoHostAvailableException(Map<InetAddress,String> errors)

Method Detail

getErrors

public Map<InetAddress,String> getErrors()

Return the hosts tried along with descriptions of the error encountered while trying them.

Returns:

a map containing for each tried host a description of the error triggered when trying it.

copy

public DriverException copy()

Description copied from class: DriverException

Copy the exception.

This return a new exception, equivalent to the original one, except that because a new object is created in the current thread, the top-most element in the stacktrace of the exception will refer to the current thread (this mainly use for internal use by the driver). The cause of the copied exception will be the original exception.

Specified by:

copy in class DriverException

Returns:

a copy/clone of this exception.