| /* |
| * 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.spark.sql.execution.command.preaaggregate |
| |
| import scala.collection.JavaConverters._ |
| import scala.collection.mutable |
| |
| import org.apache.spark.sql._ |
| import org.apache.spark.sql.catalyst.TableIdentifier |
| import org.apache.spark.sql.execution.command._ |
| import org.apache.spark.sql.execution.command.management.CarbonLoadDataCommand |
| import org.apache.spark.sql.execution.command.table.CarbonCreateTableCommand |
| import org.apache.spark.sql.execution.command.timeseries.TimeSeriesUtil |
| import org.apache.spark.sql.parser.CarbonSpark2SqlParser |
| |
| import org.apache.carbondata.common.exceptions.sql.MalformedDataMapCommandException |
| import org.apache.carbondata.core.constants.CarbonCommonConstants |
| import org.apache.carbondata.core.metadata.schema.table.CarbonTable |
| import org.apache.carbondata.core.statusmanager.{SegmentStatus, SegmentStatusManager} |
| |
| /** |
| * Below helper class will be used to create pre-aggregate table |
| * and updating the parent table about the child table information |
| * It will be either success or nothing happen in case of failure: |
| * 1. failed to create pre aggregate table. |
| * 2. failed to update main table |
| * |
| */ |
| case class PreAggregateTableHelper( |
| var parentTable: CarbonTable, |
| dataMapName: String, |
| dataMapClassName: String, |
| dataMapProperties: java.util.Map[String, String], |
| queryString: String, |
| timeSeriesFunction: Option[String] = None, |
| ifNotExistsSet: Boolean = false) { |
| |
| var loadCommand: CarbonLoadDataCommand = _ |
| |
| def initMeta(sparkSession: SparkSession): Seq[Row] = { |
| val dmProperties = dataMapProperties.asScala |
| val updatedQuery = new CarbonSpark2SqlParser().addPreAggFunction(queryString) |
| val df = sparkSession.sql(updatedQuery) |
| val fieldRelationMap = PreAggregateUtil.validateActualSelectPlanAndGetAttributes( |
| df.logicalPlan, queryString) |
| val fields = fieldRelationMap.keySet.toSeq |
| val tableProperties = mutable.Map[String, String]() |
| dmProperties.foreach(t => tableProperties.put(t._1, t._2)) |
| |
| val selectTable = PreAggregateUtil.getParentCarbonTable(df.logicalPlan) |
| if (!parentTable.getTableName.equalsIgnoreCase(selectTable.getTableName)) { |
| throw new MalformedDataMapCommandException( |
| "Parent table name is different in select and create") |
| } |
| var neworder = Seq[String]() |
| val parentOrder = parentTable.getSortColumns(parentTable.getTableName).asScala |
| parentOrder.foreach(parentcol => |
| fields.filter(col => fieldRelationMap(col).aggregateFunction.isEmpty && |
| parentcol.equals(fieldRelationMap(col). |
| columnTableRelationList.get(0).parentColumnName)) |
| .map(cols => neworder :+= cols.column) |
| ) |
| tableProperties.put(CarbonCommonConstants.SORT_COLUMNS, neworder.mkString(",")) |
| tableProperties.put("sort_scope", parentTable.getTableInfo.getFactTable. |
| getTableProperties.asScala.getOrElse("sort_scope", CarbonCommonConstants |
| .LOAD_SORT_SCOPE_DEFAULT)) |
| tableProperties |
| .put(CarbonCommonConstants.TABLE_BLOCKSIZE, parentTable.getBlockSizeInMB.toString) |
| val tableIdentifier = |
| TableIdentifier(parentTable.getTableName + "_" + dataMapName, |
| Some(parentTable.getDatabaseName)) |
| // prepare table model of the collected tokens |
| val tableModel: TableModel = new CarbonSpark2SqlParser().prepareTableModel( |
| ifNotExistPresent = ifNotExistsSet, |
| new CarbonSpark2SqlParser().convertDbNameToLowerCase(tableIdentifier.database), |
| tableIdentifier.table.toLowerCase, |
| fields, |
| Seq(), |
| tableProperties, |
| None, |
| isAlterFlow = false, |
| None) |
| |
| // updating the relation identifier, this will be stored in child table |
| // which can be used during dropping of pre-aggreate table as parent table will |
| // also get updated |
| if(timeSeriesFunction != null) { |
| TimeSeriesUtil.validateTimeSeriesEventTime(dmProperties.toMap, parentTable) |
| TimeSeriesUtil.validateEventTimeColumnExitsInSelect( |
| fieldRelationMap, |
| dmProperties(TimeSeriesUtil.TIMESERIES_EVENTTIME)) |
| TimeSeriesUtil.updateTimeColumnSelect( |
| fieldRelationMap, |
| dmProperties(TimeSeriesUtil.TIMESERIES_EVENTTIME), |
| timeSeriesFunction.get) |
| } |
| tableModel.parentTable = Some(parentTable) |
| tableModel.dataMapRelation = Some(fieldRelationMap) |
| val tablePath = if (dmProperties.contains("path")) { |
| dmProperties("path") |
| } else { |
| CarbonEnv.getTablePath(tableModel.databaseNameOp, tableModel.tableName)(sparkSession) |
| } |
| CarbonCreateTableCommand(TableNewProcessor(tableModel), |
| tableModel.ifNotExistsSet, Some(tablePath), isVisible = false).run(sparkSession) |
| |
| val table = CarbonEnv.getCarbonTable(tableIdentifier)(sparkSession) |
| val tableInfo = table.getTableInfo |
| |
| // child schema object will be saved on parent table schema |
| val childSchema = tableInfo.getFactTable.buildChildSchema( |
| dataMapName, |
| dataMapClassName, |
| tableInfo.getDatabaseName, |
| queryString, |
| "AGGREGATION") |
| dmProperties.foreach(f => childSchema.getProperties.put(f._1, f._2)) |
| |
| // updating the parent table about child table |
| PreAggregateUtil.updateMainTable(parentTable, childSchema, sparkSession) |
| |
| // After updating the parent carbon table with data map entry extract the latest table object |
| // to be used in further create process. |
| parentTable = CarbonEnv.getCarbonTable(Some(parentTable.getDatabaseName), |
| parentTable.getTableName)(sparkSession) |
| |
| val updatedLoadQuery = if (timeSeriesFunction != null) { |
| PreAggregateUtil.createTimeSeriesSelectQueryFromMain( |
| childSchema.getChildSchema, |
| parentTable.getTableName, |
| parentTable.getDatabaseName) |
| } else { |
| queryString |
| } |
| val dataFrame = sparkSession.sql(new CarbonSpark2SqlParser().addPreAggLoadFunction( |
| updatedLoadQuery)).drop("preAggLoad") |
| loadCommand = PreAggregateUtil.createLoadCommandForChild( |
| childSchema.getChildSchema.getListOfColumns, |
| tableIdentifier, |
| dataFrame, |
| isOverwrite = false, |
| sparkSession = sparkSession) |
| loadCommand.processMetadata(sparkSession) |
| Seq.empty |
| } |
| |
| def initData(sparkSession: SparkSession): Seq[Row] = { |
| // load child table if parent table has existing segments |
| // This will be used to check if the parent table has any segments or not. If not then no |
| // need to fire load for pre-aggregate table. Therefore reading the load details for PARENT |
| // table. |
| SegmentStatusManager.deleteLoadsAndUpdateMetadata(parentTable, false) |
| val loadAvailable = SegmentStatusManager.readLoadMetadata(parentTable.getMetadataPath) |
| if (loadAvailable.exists(load => load.getSegmentStatus == SegmentStatus.INSERT_IN_PROGRESS || |
| load.getSegmentStatus == SegmentStatus.INSERT_OVERWRITE_IN_PROGRESS)) { |
| throw new UnsupportedOperationException( |
| "Cannot create pre-aggregate table when insert is in progress on main table") |
| } else if (loadAvailable.nonEmpty) { |
| // Passing segmentToLoad as * because we want to load all the segments into the |
| // pre-aggregate table even if the user has set some segments on the parent table. |
| loadCommand.dataFrame = Some(PreAggregateUtil |
| .getDataFrame(sparkSession, loadCommand.logicalPlan.get)) |
| PreAggregateUtil.startDataLoadForDataMap( |
| TableIdentifier(parentTable.getTableName, Some(parentTable.getDatabaseName)), |
| segmentToLoad = "*", |
| validateSegments = true, |
| loadCommand, |
| isOverwrite = false, |
| sparkSession) |
| } |
| Seq.empty |
| } |
| } |
| |
| |
