001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver.compactions;
019
020import java.util.ArrayList;
021import java.util.Iterator;
022import java.util.List;
023import java.util.Random;
024import java.util.concurrent.ThreadLocalRandom;
025import org.apache.hadoop.hbase.regionserver.HStoreFile;
026
027class SpikyFileListGenerator extends StoreFileListGenerator {
028
029  @Override
030  public Iterator<List<HStoreFile>> iterator() {
031    return new Iterator<List<HStoreFile>>() {
032      private int count = 0;
033
034      @Override
035      public boolean hasNext() {
036        return count < (MAX_FILE_GEN_ITERS);
037      }
038
039      @Override
040      public List<HStoreFile> next() {
041        count += 1;
042        ArrayList<HStoreFile> files = new ArrayList<>(NUM_FILES_GEN);
043        Random rand = ThreadLocalRandom.current();
044        for (int x = 0; x < NUM_FILES_GEN; x++) {
045          int fileSize = rand.nextInt(5) + 1;
046          if (x % 10 == 0) {
047            fileSize = rand.nextInt(5) + 50;
048          }
049          files.add(createMockStoreFile(fileSize));
050        }
051        return files;
052      }
053
054      @Override
055      public void remove() {
056      }
057    };
058  }
059
060}