brkyvz commented on a change in pull request #25354: [SPARK-28612][SQL] Add DataFrameWriterV2 API URL: https://github.com/apache/spark/pull/25354#discussion_r316432364
########## File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriterV2.scala ########## @@ -0,0 +1,415 @@ +/* + * 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 + +import scala.collection.JavaConverters._ +import scala.collection.mutable + +import org.apache.spark.annotation.Experimental +import org.apache.spark.sql.catalog.v2.expressions.{LogicalExpressions, Transform} +import org.apache.spark.sql.catalyst.analysis.{CannotReplaceMissingTableException, NoSuchTableException, TableAlreadyExistsException} +import org.apache.spark.sql.catalyst.expressions.{Attribute, Bucket, Days, Hours, Literal, Months, Years} +import org.apache.spark.sql.catalyst.plans.logical.{AppendData, CreateTableAsSelect, LogicalPlan, OverwriteByExpression, OverwritePartitionsDynamic, ReplaceTableAsSelect} +import org.apache.spark.sql.execution.SQLExecution +import org.apache.spark.sql.execution.datasources.v2.DataSourceV2Relation +import org.apache.spark.sql.types.IntegerType + +/** + * Interface used to write a [[org.apache.spark.sql.Dataset]] to external storage using the v2 API. + * + * @since 3.0.0 + */ +@Experimental +final class DataFrameWriterV2[T] private[sql](table: String, ds: Dataset[T]) + extends CreateTableWriter[T] { + + import org.apache.spark.sql.catalog.v2.CatalogV2Implicits._ + import org.apache.spark.sql.catalog.v2.utils.CatalogV2Util._ + import df.sparkSession.sessionState.analyzer.CatalogObjectIdentifier + + private val df: DataFrame = ds.toDF() + + private val sparkSession = ds.sparkSession + + private val tableName = sparkSession.sessionState.sqlParser.parseMultipartIdentifier(table) + + private val (catalog, identifier) = { + val CatalogObjectIdentifier(maybeCatalog, identifier) = tableName + val catalog = maybeCatalog.orElse(sparkSession.sessionState.analyzer.sessionCatalog) + .getOrElse(throw new AnalysisException( + s"No catalog specified for table ${identifier.quoted} and no default v2 catalog is set")) + .asTableCatalog + + (catalog, identifier) + } + + private val logicalPlan = df.queryExecution.logical + + private var provider: Option[String] = None + + private val options = new mutable.HashMap[String, String]() + + private val properties = new mutable.HashMap[String, String]() + + private var partitioning: Option[Seq[Transform]] = None + + override def using(provider: String): CreateTableWriter[T] = { + this.provider = Some(provider) + this + } + + override def option(key: String, value: String): DataFrameWriterV2[T] = { + this.options.put(key, value) + this + } + + override def options(options: scala.collection.Map[String, String]): DataFrameWriterV2[T] = { + options.foreach { + case (key, value) => + this.options.put(key, value) + } + this + } + + override def options(options: java.util.Map[String, String]): DataFrameWriterV2[T] = { + this.options(options.asScala) + this + } + + override def tableProperty(property: String, value: String): DataFrameWriterV2[T] = { + this.properties.put(property, value) + this + } + + @scala.annotation.varargs + override def partitionedBy(column: Column, columns: Column*): CreateTableWriter[T] = { + val asTransforms = (column +: columns).map(_.expr).map { + case Years(attr: Attribute) => + LogicalExpressions.years(attr.name) + case Months(attr: Attribute) => + LogicalExpressions.months(attr.name) + case Days(attr: Attribute) => + LogicalExpressions.days(attr.name) + case Hours(attr: Attribute) => + LogicalExpressions.hours(attr.name) + case Bucket(Literal(numBuckets: Int, IntegerType), attr: Attribute) => + LogicalExpressions.bucket(numBuckets, attr.name) + case attr: Attribute => + LogicalExpressions.identity(attr.name) + case expr => + throw new AnalysisException(s"Invalid partition transformation: ${expr.sql}") + } + + this.partitioning = Some(asTransforms) + this + } + + override def create(): Unit = { + // create and replace could alternatively create ParsedPlan statements, like + // `CreateTableFromDataFrameStatement(UnresolvedRelation(tableName), ...)`, to keep the catalog + // resolution logic in the analyzer. + runCommand("create") { + CreateTableAsSelect( + catalog, + identifier, + partitioning.getOrElse(Seq.empty), + logicalPlan, + properties = provider.map(p => properties + ("provider" -> p)).getOrElse(properties).toMap, Review comment: doesn't need to be initial. We should however standardize on whether: - `option("path", ...)` would/should show up as "location" as a table property - Or should it be set by `tableProperty("location", ...)` - or `tableProperty("path", ...)` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
