/**
* 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.llap.cache;
import org.apache.hadoop.hive.common.io.Allocator;
import org.apache.hadoop.hive.common.io.encoded.MemoryBuffer;
/**
* An allocator that has additional, internal-only call to deallocate evicted buffer.
* When we evict buffers, we do not release memory to the system; that is because we want it for
* ourselves, so we set the value atomically to account for both eviction and the new demand.
*/
public interface EvictionAwareAllocator extends Allocator {
void deallocateEvicted(MemoryBuffer buffer);
}