/**
* 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.hadoop.hive.common;
/**
* Interface that can be used to provide size estimates based on data structures held in memory for an object instance.
*/
public interface MemoryEstimate {
/**
* Returns estimated memory size based {@link org.apache.hadoop.hive.ql.util.JavaDataModel}
*
* @return estimated memory size in bytes
*/
long getEstimatedMemorySize();
}