@@ -0,0 +1,1976 @@
+/*%0A * Licensed to the University of California, Berkeley under one or more contributor license%0A * agreements. See the NOTICE file distributed with this work for additional information regarding%0A * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the%0A * %22License%22); you may not use this file except in compliance with the License. You may obtain a%0A * copy of the License at%0A *%0A * http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software distributed under the License%0A * is distributed on an %22AS IS%22 BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express%0A * or implied. See the License for the specific language governing permissions and limitations under%0A * the License.%0A */%0A%0Apackage tachyon.worker.block.evictor;%0A%0Aimport tachyon.worker.block.BlockMetadataManager;%0A%0A/**%0A * A simple evictor that evicts random blocks until the required size in the target tier is met.%0A */%0Apublic class NaiveEvictor implements Evictor %7B%0A  private final BlockMetadataManager mMetadata;%0A%0A  public NaiveEvictor(BlockMetadataManager metadata) %7B%0A    mMetadata = metadata;%0A  %7D%0A%0A  @Override%0A  public EvictionPlan freeSpace(long bytes, int tierHint) %7B%0A    return new EvictionPlan(null, null);%0A  %7D%0A%0A  @Override%0A  public void preCreateBlock(long userId, long blockId, int tierHint) %7B%7D%0A%0A  @Override%0A  public void postCreateBlock(long userId, long blockId, int tierHint) %7B%7D%0A%0A  @Override%0A  public void preReadBlock(long userId, long blockId, long offset, long length) %7B%7D%0A%0A  @Override%0A  public void postReadBlock(long userId, long blockId, long offset, long length) %7B%7D%0A%0A  @Override%0A  public void preMoveBlock(long userId, long blockId, int newTierHint) %7B%7D%0A%0A  @Override%0A  public void postMoveBlock(long userId, long blockId, int newTierHint) %7B%7D%0A%0A  @Override%0A  public void preRemoveBlock(long userId, long blockId) %7B%7D%0A%0A  @Override%0A  public void postRemoveBlock(long userId, long blockId) %7B%7D%0A%0A%7D%0A

Add NaiveEvictor---a naive implementation of evictor interface