| /* |
| * 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.iotdb.db.storageengine.dataregion.read.reader.chunk.metadata; |
| |
| import org.apache.iotdb.db.queryengine.execution.fragment.QueryContext; |
| import org.apache.iotdb.db.queryengine.metric.SeriesScanCostMetricSet; |
| import org.apache.iotdb.db.storageengine.dataregion.modification.Modification; |
| import org.apache.iotdb.db.storageengine.dataregion.read.reader.chunk.DiskChunkLoader; |
| import org.apache.iotdb.db.storageengine.dataregion.tsfile.TsFileResource; |
| import org.apache.iotdb.db.utils.ModificationUtils; |
| |
| import org.apache.tsfile.file.metadata.IChunkMetadata; |
| import org.apache.tsfile.file.metadata.ITimeSeriesMetadata; |
| import org.apache.tsfile.file.metadata.TimeseriesMetadata; |
| import org.apache.tsfile.read.controller.IChunkMetadataLoader; |
| import org.apache.tsfile.read.filter.basic.Filter; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| |
| import static org.apache.iotdb.db.queryengine.metric.SeriesScanCostMetricSet.CHUNK_METADATA_FILTER_NONALIGNED_DISK; |
| import static org.apache.iotdb.db.queryengine.metric.SeriesScanCostMetricSet.CHUNK_METADATA_MODIFICATION_NONALIGNED_DISK; |
| import static org.apache.iotdb.db.queryengine.metric.SeriesScanCostMetricSet.LOAD_CHUNK_METADATA_LIST_NONALIGNED_DISK; |
| |
| public class DiskChunkMetadataLoader implements IChunkMetadataLoader { |
| |
| private final TsFileResource resource; |
| private final QueryContext context; |
| |
| // global time filter, only used to check time range |
| private final Filter globalTimeFilter; |
| |
| private final List<Modification> pathModifications; |
| |
| private static final Logger DEBUG_LOGGER = LoggerFactory.getLogger("QUERY_DEBUG"); |
| private static final SeriesScanCostMetricSet SERIES_SCAN_COST_METRIC_SET = |
| SeriesScanCostMetricSet.getInstance(); |
| |
| public DiskChunkMetadataLoader( |
| TsFileResource resource, |
| QueryContext context, |
| Filter globalTimeFilter, |
| List<Modification> pathModifications) { |
| this.resource = resource; |
| this.context = context; |
| this.globalTimeFilter = globalTimeFilter; |
| this.pathModifications = pathModifications; |
| } |
| |
| @Override |
| public List<IChunkMetadata> loadChunkMetadataList(ITimeSeriesMetadata timeSeriesMetadata) { |
| final long t1 = System.nanoTime(); |
| try { |
| List<IChunkMetadata> chunkMetadataList = |
| ((TimeseriesMetadata) timeSeriesMetadata).getCopiedChunkMetadataList(); |
| |
| // when chunkMetadataList.size() == 1, it means that the chunk statistics is same as |
| // the time series metadata, so we don't need to filter it again. |
| if (chunkMetadataList.size() > 1) { |
| // remove not satisfied ChunkMetaData |
| final long t2 = System.nanoTime(); |
| chunkMetadataList.removeIf( |
| chunkMetaData -> |
| (globalTimeFilter != null && globalTimeFilter.canSkip(chunkMetaData)) |
| || chunkMetaData.getStartTime() > chunkMetaData.getEndTime()); |
| |
| if (context.isDebug()) { |
| DEBUG_LOGGER.info("After removed by filter Chunk meta data list is: "); |
| chunkMetadataList.forEach(c -> DEBUG_LOGGER.info(c.toString())); |
| } |
| |
| SERIES_SCAN_COST_METRIC_SET.recordSeriesScanCost( |
| CHUNK_METADATA_FILTER_NONALIGNED_DISK, System.nanoTime() - t2); |
| } |
| |
| final long t3 = System.nanoTime(); |
| |
| if (context.isDebug()) { |
| DEBUG_LOGGER.info( |
| "Modifications size is {} for file Path: {} ", |
| pathModifications.size(), |
| resource.getTsFilePath()); |
| pathModifications.forEach(c -> DEBUG_LOGGER.info(c.toString())); |
| } |
| |
| if (!pathModifications.isEmpty()) { |
| ModificationUtils.modifyChunkMetaData(chunkMetadataList, pathModifications); |
| } |
| |
| if (context.isDebug()) { |
| DEBUG_LOGGER.info("After modification Chunk meta data list is: "); |
| chunkMetadataList.forEach(c -> DEBUG_LOGGER.info(c.toString())); |
| } |
| |
| SERIES_SCAN_COST_METRIC_SET.recordSeriesScanCost( |
| CHUNK_METADATA_MODIFICATION_NONALIGNED_DISK, System.nanoTime() - t3); |
| |
| // it is ok, even if it is not thread safe, because the cost of creating a DiskChunkLoader is |
| // very cheap. |
| chunkMetadataList.forEach( |
| chunkMetadata -> { |
| if (chunkMetadata.needSetChunkLoader()) { |
| chunkMetadata.setVersion(resource.getVersion()); |
| chunkMetadata.setClosed(resource.isClosed()); |
| chunkMetadata.setChunkLoader(new DiskChunkLoader(context, resource)); |
| } |
| }); |
| |
| return chunkMetadataList; |
| } finally { |
| SERIES_SCAN_COST_METRIC_SET.recordSeriesScanCost( |
| LOAD_CHUNK_METADATA_LIST_NONALIGNED_DISK, System.nanoTime() - t1); |
| } |
| } |
| } |