| /* |
| * 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.memtable; |
| |
| import org.apache.iotdb.commons.exception.MetadataException; |
| import org.apache.iotdb.commons.path.PartialPath; |
| import org.apache.iotdb.db.exception.WriteProcessException; |
| import org.apache.iotdb.db.exception.query.QueryProcessException; |
| import org.apache.iotdb.db.queryengine.execution.fragment.QueryContext; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.write.InsertRowNode; |
| import org.apache.iotdb.db.queryengine.plan.planner.plan.node.write.InsertTabletNode; |
| import org.apache.iotdb.db.storageengine.dataregion.flush.FlushStatus; |
| import org.apache.iotdb.db.storageengine.dataregion.modification.Modification; |
| import org.apache.iotdb.db.storageengine.dataregion.wal.buffer.WALEntryValue; |
| |
| import org.apache.tsfile.file.metadata.IDeviceID; |
| import org.apache.tsfile.utils.Pair; |
| import org.apache.tsfile.write.schema.IMeasurementSchema; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * IMemTable is designed to store data points which are not flushed into TsFile yet. An instance of |
| * IMemTable maintains all series belonging to one StorageGroup, corresponding to one |
| * StorageGroupProcessor.<br> |
| * The concurrent control of IMemTable is based on the concurrent control of StorageGroupProcessor, |
| * i.e., Writing and querying operations must already have gotten writeLock and readLock |
| * respectively.<br> |
| */ |
| public interface IMemTable extends WALEntryValue { |
| |
| Map<IDeviceID, IWritableMemChunkGroup> getMemTableMap(); |
| |
| void write( |
| IDeviceID deviceId, |
| List<IMeasurementSchema> schemaList, |
| long insertTime, |
| Object[] objectValue); |
| |
| void writeAlignedRow( |
| IDeviceID deviceId, |
| List<IMeasurementSchema> schemaList, |
| long insertTime, |
| Object[] objectValue); |
| |
| /** @return the number of points */ |
| long size(); |
| |
| /** @return memory usage */ |
| long memSize(); |
| |
| /** only used when mem control enabled */ |
| void addTVListRamCost(long cost); |
| |
| /** only used when mem control enabled */ |
| void releaseTVListRamCost(long cost); |
| |
| /** only used when mem control enabled */ |
| long getTVListsRamCost(); |
| |
| /** |
| * only used when mem control enabled |
| * |
| * @return whether the average number of points in each WritableChunk reaches the threshold |
| */ |
| boolean reachTotalPointNumThreshold(); |
| |
| int getSeriesNumber(); |
| |
| long getTotalPointsNum(); |
| |
| /** |
| * insert into this memtable |
| * |
| * @param insertRowNode insertRowNode |
| */ |
| void insert(InsertRowNode insertRowNode); |
| |
| void insertAlignedRow(InsertRowNode insertRowNode); |
| |
| /** |
| * insert tablet into this memtable. The rows to be inserted are in the range [start, end). Null |
| * value in each column values will be replaced by the subsequent non-null value, e.g., {1, null, |
| * 3, null, 5} will be {1, 3, 5, null, 5} |
| * |
| * @param insertTabletNode insertTabletNode |
| * @param start included |
| * @param end excluded |
| */ |
| void insertTablet(InsertTabletNode insertTabletNode, int start, int end) |
| throws WriteProcessException; |
| |
| void insertAlignedTablet(InsertTabletNode insertTabletNode, int start, int end) |
| throws WriteProcessException; |
| |
| ReadOnlyMemChunk query( |
| QueryContext context, |
| PartialPath fullPath, |
| long ttlLowerBound, |
| List<Pair<Modification, IMemTable>> modsToMemtabled) |
| throws IOException, QueryProcessException, MetadataException; |
| |
| /** putBack all the memory resources. */ |
| void clear(); |
| |
| boolean isEmpty(); |
| |
| /** |
| * Delete data in it whose timestamp <= 'timestamp' and belonging to timeseries path. Only called |
| * for non-flushing MemTable. |
| * |
| * @param path the PartialPath the timeseries to be deleted. |
| * @param devicePath the device path of the timeseries to be deleted. |
| * @param startTimestamp the lower-bound of deletion time. |
| * @param endTimestamp the upper-bound of deletion time |
| */ |
| void delete(PartialPath path, PartialPath devicePath, long startTimestamp, long endTimestamp); |
| |
| /** |
| * Make a copy of this MemTable. |
| * |
| * @return a MemTable with the same data as this one. |
| */ |
| IMemTable copy(); |
| |
| boolean isSignalMemTable(); |
| |
| void setShouldFlush(); |
| |
| boolean shouldFlush(); |
| |
| /** release resource of this memtable */ |
| void release(); |
| |
| /** must guarantee the device exists in the work memtable only used when mem control enabled */ |
| boolean checkIfChunkDoesNotExist(IDeviceID deviceId, String measurement); |
| |
| /** only used when mem control enabled */ |
| long getCurrentTVListSize(IDeviceID deviceId, String measurement); |
| |
| /** only used when mem control enabled */ |
| void addTextDataSize(long textDataIncrement); |
| |
| /** only used when mem control enabled */ |
| void releaseTextDataSize(long textDataDecrement); |
| |
| long getMaxPlanIndex(); |
| |
| long getMinPlanIndex(); |
| |
| long getMemTableId(); |
| |
| long getCreatedTime(); |
| |
| long getUpdateTime(); |
| |
| FlushStatus getFlushStatus(); |
| |
| void setFlushStatus(FlushStatus flushStatus); |
| |
| Map<IDeviceID, Long> getMaxTime(); |
| |
| String getDatabase(); |
| |
| String getDataRegionId(); |
| |
| void setDatabaseAndDataRegionId(String database, String dataRegionId); |
| |
| void markAsNotGeneratedByPipe(); |
| |
| boolean isTotallyGeneratedByPipe(); |
| } |