| /* |
| * 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.hudi.index.bloom; |
| |
| import org.apache.hudi.common.util.collection.Pair; |
| |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Simple implementation of {@link IndexFileFilter}. Sequentially goes through every index file in a given partition to |
| * search for potential index files to be searched for a given record key. |
| */ |
| class ListBasedIndexFileFilter implements IndexFileFilter { |
| |
| final Map<String, List<BloomIndexFileInfo>> partitionToFileIndexInfo; |
| |
| /** |
| * Instantiates {@link ListBasedIndexFileFilter}. |
| * |
| * @param partitionToFileIndexInfo Map of partition to List of {@link BloomIndexFileInfo} |
| */ |
| ListBasedIndexFileFilter(final Map<String, List<BloomIndexFileInfo>> partitionToFileIndexInfo) { |
| this.partitionToFileIndexInfo = partitionToFileIndexInfo; |
| } |
| |
| @Override |
| public Set<Pair<String, String>> getMatchingFilesAndPartition(String partitionPath, String recordKey) { |
| List<BloomIndexFileInfo> indexInfos = partitionToFileIndexInfo.get(partitionPath); |
| Set<Pair<String, String>> toReturn = new HashSet<>(); |
| if (indexInfos != null) { // could be null, if there are no files in a given partition yet. |
| // for each candidate file in partition, that needs to be compared. |
| for (BloomIndexFileInfo indexInfo : indexInfos) { |
| if (shouldCompareWithFile(indexInfo, recordKey)) { |
| toReturn.add(Pair.of(partitionPath, indexInfo.getFileId())); |
| } |
| } |
| } |
| return toReturn; |
| } |
| |
| /** |
| * if we dont have key ranges, then also we need to compare against the file. no other choice if we do, then only |
| * compare the file if the record key falls in range. |
| */ |
| protected boolean shouldCompareWithFile(BloomIndexFileInfo indexInfo, String recordKey) { |
| return !indexInfo.hasKeyRanges() || indexInfo.isKeyInRange(recordKey); |
| } |
| } |