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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.drill.exec.planner.fragment;
/**
* Interface to implement for passing parameters to {@link FragmentParallelizer}.
*/
public interface ParallelizationParameters {
/**
* @return Configured max width per slice of work.
*/
long getSliceTarget();
/**
* @return Configured maximum allowed number of parallelization units per node.
*/
int getMaxWidthPerNode();
/**
* @return Configured maximum allowed number of parallelization units per all nodes in the cluster.
*/
int getMaxGlobalWidth();
/**
* @return Factor by which a node with endpoint affinity will be favored while creating assignment.
*/
double getAffinityFactor();
}
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