| /* |
| * 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.compaction.execute.task.subtask; |
| |
| import org.apache.iotdb.commons.conf.IoTDBConstant; |
| import org.apache.iotdb.db.queryengine.execution.fragment.FragmentInstanceContext; |
| import org.apache.iotdb.db.storageengine.dataregion.compaction.execute.performer.impl.ReadPointCompactionPerformer; |
| import org.apache.iotdb.db.storageengine.dataregion.compaction.execute.utils.reader.IDataBlockReader; |
| import org.apache.iotdb.db.storageengine.dataregion.compaction.execute.utils.writer.AbstractCompactionWriter; |
| import org.apache.iotdb.db.storageengine.dataregion.read.QueryDataSource; |
| |
| import org.apache.tsfile.file.metadata.IDeviceID; |
| import org.apache.tsfile.write.schema.IMeasurementSchema; |
| import org.apache.tsfile.write.schema.MeasurementSchema; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.Callable; |
| |
| /** |
| * This class is used to implement reading the measurements and writing to the target files in |
| * parallel in the compaction. Currently, it only works for nonAligned data in cross space |
| * compaction and unseq inner space compaction. |
| */ |
| public class ReadPointPerformerSubTask implements Callable<Void> { |
| @SuppressWarnings("squid:1068") |
| private static final Logger logger = |
| LoggerFactory.getLogger(IoTDBConstant.COMPACTION_LOGGER_NAME); |
| |
| private final IDeviceID device; |
| private final List<String> measurementList; |
| private final FragmentInstanceContext fragmentInstanceContext; |
| private final QueryDataSource queryDataSource; |
| private final AbstractCompactionWriter compactionWriter; |
| private final Map<String, MeasurementSchema> schemaMap; |
| private final int taskId; |
| |
| public ReadPointPerformerSubTask( |
| IDeviceID device, |
| List<String> measurementList, |
| FragmentInstanceContext fragmentInstanceContext, |
| QueryDataSource queryDataSource, |
| AbstractCompactionWriter compactionWriter, |
| Map<String, MeasurementSchema> schemaMap, |
| int taskId) { |
| this.device = device; |
| this.measurementList = measurementList; |
| this.fragmentInstanceContext = fragmentInstanceContext; |
| this.queryDataSource = queryDataSource; |
| this.compactionWriter = compactionWriter; |
| this.schemaMap = schemaMap; |
| this.taskId = taskId; |
| } |
| |
| @Override |
| public Void call() throws Exception { |
| for (String measurement : measurementList) { |
| List<IMeasurementSchema> measurementSchemas = |
| Collections.singletonList(schemaMap.get(measurement)); |
| IDataBlockReader dataBlockReader = |
| ReadPointCompactionPerformer.constructReader( |
| device, |
| Collections.singletonList(measurement), |
| measurementSchemas, |
| new ArrayList<>(schemaMap.keySet()), |
| fragmentInstanceContext, |
| queryDataSource, |
| false); |
| |
| if (dataBlockReader.hasNextBatch()) { |
| compactionWriter.startMeasurement(measurementSchemas, taskId); |
| ReadPointCompactionPerformer.writeWithReader( |
| compactionWriter, dataBlockReader, device, taskId, false); |
| compactionWriter.endMeasurement(taskId); |
| } |
| } |
| return null; |
| } |
| } |