ImproperParallelismException.java

/*
 * Copyright (c) 2011-2015 EPFL DATA Laboratory
 * Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
 *
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ch.epfl.data.squall.api.sql.util;

/*
 * Occurs when an optimizer tries to assign parallelism (which is obtained by the formula)
 *   more than how many distinct join condition key values are there.
 */
public class ImproperParallelismException extends RuntimeException {
    /**
	 * 
	 */
    private static final long serialVersionUID = 1L;
    private final String _msg;

    public ImproperParallelismException(String msg) {
	_msg = msg;
    }

    @Override
    public String getMessage() {
	return _msg;
    }
}