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