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; 023 024import org.apache.hadoop.hbase.regionserver.HStoreFile; 025 026/** 027 * Class to generate several lists of StoreFiles that are all the same size. 028 */ 029class ConstantSizeFileListGenerator extends StoreFileListGenerator { 030 031 /** How many mb's mock storefiles should be. */ 032 private static final int FILESIZE = 5; 033 034 ConstantSizeFileListGenerator() { 035 super(ConstantSizeFileListGenerator.class); 036 } 037 038 @Override 039 public final Iterator<List<HStoreFile>> iterator() { 040 return new Iterator<List<HStoreFile>>() { 041 private int count = 0; 042 043 @Override 044 public boolean hasNext() { 045 return count < MAX_FILE_GEN_ITERS; 046 } 047 048 @Override 049 public List<HStoreFile> next() { 050 count += 1; 051 ArrayList<HStoreFile> files = new ArrayList<>(NUM_FILES_GEN); 052 for (int i = 0; i < NUM_FILES_GEN; i++) { 053 files.add(createMockStoreFile(FILESIZE)); 054 } 055 return files; 056 } 057 058 @Override 059 public void remove() { 060 061 } 062 }; 063 } 064}