spark DropPartitionExec 源码
spark DropPartitionExec 代码
文件路径:/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DropPartitionExec.scala
/*
* 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.datasources.v2
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.analysis.{NoSuchPartitionsException, ResolvedPartitionSpec}
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.connector.catalog.{SupportsAtomicPartitionManagement, SupportsPartitionManagement}
import org.apache.spark.sql.errors.QueryExecutionErrors
/**
* Physical plan node for dropping partitions of table.
*/
case class DropPartitionExec(
table: SupportsPartitionManagement,
partSpecs: Seq[ResolvedPartitionSpec],
ignoreIfNotExists: Boolean,
purge: Boolean,
refreshCache: () => Unit) extends LeafV2CommandExec {
import DataSourceV2Implicits._
override def output: Seq[Attribute] = Seq.empty
override protected def run(): Seq[InternalRow] = {
val (existsPartIdents, notExistsPartIdents) =
partSpecs.map(_.ident).partition(table.partitionExists)
if (notExistsPartIdents.nonEmpty && !ignoreIfNotExists) {
throw new NoSuchPartitionsException(
table.name(), notExistsPartIdents, table.partitionSchema())
}
val isTableAltered = existsPartIdents match {
case Seq() => false // Nothing will be done
case Seq(partIdent) =>
if (purge) table.purgePartition(partIdent) else table.dropPartition(partIdent)
case _ if table.isInstanceOf[SupportsAtomicPartitionManagement] =>
val idents = existsPartIdents.toArray
val atomicTable = table.asAtomicPartitionable
if (purge) atomicTable.purgePartitions(idents) else atomicTable.dropPartitions(idents)
case _ =>
throw QueryExecutionErrors.cannotDropMultiPartitionsOnNonatomicPartitionTableError(
table.name())
}
if (isTableAltered) refreshCache()
Seq.empty
}
}
相关信息
相关文章
0
赞
- 所属分类: 前端技术
- 本文标签:
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦