com.bigdata.bop.join

Class UnconstrainedJoinException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

com.bigdata.bop.join.UnconstrainedJoinException

All Implemented Interfaces:

Serializable

public class UnconstrainedJoinException
extends RuntimeException

An exception thrown when a hash join does not have any join variables and is considering the cross product of two many solutions as a result.

This exception normally indicates a problem with the query plan since a hash join without any join variables will consider the full M x N cross product of the solutions. If that cross product is too large, then the join can become CPU bound and the query will make only very slow progress.

Version:

$Id$

Author:

Bryan Thompson

See Also:

HashJoinAnnotations#NO_JOIN_VARS_LIMIT, Serialized Form

Constructor Summary

Constructors

Constructor and Description
UnconstrainedJoinException()
UnconstrainedJoinException(String message)
UnconstrainedJoinException(String message, Throwable cause)
UnconstrainedJoinException(Throwable cause)

Method Summary

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

UnconstrainedJoinException

public UnconstrainedJoinException()

UnconstrainedJoinException

public UnconstrainedJoinException(String message)

Parameters:

message -

UnconstrainedJoinException

public UnconstrainedJoinException(Throwable cause)

Parameters:

cause -

UnconstrainedJoinException

public UnconstrainedJoinException(String message,
                          Throwable cause)

Parameters:

message -

cause -