spark ReplaceTableExec 源码
spark ReplaceTableExec 代码
文件路径:/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/ReplaceTableExec.scala
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* 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,
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* limitations under the License.
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package org.apache.spark.sql.execution.datasources.v2
import scala.collection.JavaConverters._
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.analysis.NoSuchTableException
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.catalyst.plans.logical.TableSpec
import org.apache.spark.sql.connector.catalog.{CatalogV2Util, Identifier, StagedTable, StagingTableCatalog, Table, TableCatalog}
import org.apache.spark.sql.connector.expressions.Transform
import org.apache.spark.sql.errors.QueryCompilationErrors
import org.apache.spark.sql.types.StructType
import org.apache.spark.util.Utils
case class ReplaceTableExec(
catalog: TableCatalog,
ident: Identifier,
tableSchema: StructType,
partitioning: Seq[Transform],
tableSpec: TableSpec,
orCreate: Boolean,
invalidateCache: (TableCatalog, Table, Identifier) => Unit) extends LeafV2CommandExec {
val tableProperties = CatalogV2Util.convertTableProperties(tableSpec)
override protected def run(): Seq[InternalRow] = {
if (catalog.tableExists(ident)) {
val table = catalog.loadTable(ident)
invalidateCache(catalog, table, ident)
catalog.dropTable(ident)
} else if (!orCreate) {
throw QueryCompilationErrors.cannotReplaceMissingTableError(ident)
}
catalog.createTable(ident, tableSchema, partitioning.toArray, tableProperties.asJava)
Seq.empty
}
override def output: Seq[Attribute] = Seq.empty
}
case class AtomicReplaceTableExec(
catalog: StagingTableCatalog,
identifier: Identifier,
tableSchema: StructType,
partitioning: Seq[Transform],
tableSpec: TableSpec,
orCreate: Boolean,
invalidateCache: (TableCatalog, Table, Identifier) => Unit) extends LeafV2CommandExec {
val tableProperties = CatalogV2Util.convertTableProperties(tableSpec)
override protected def run(): Seq[InternalRow] = {
if (catalog.tableExists(identifier)) {
val table = catalog.loadTable(identifier)
invalidateCache(catalog, table, identifier)
}
val staged = if (orCreate) {
catalog.stageCreateOrReplace(
identifier, tableSchema, partitioning.toArray, tableProperties.asJava)
} else if (catalog.tableExists(identifier)) {
try {
catalog.stageReplace(
identifier, tableSchema, partitioning.toArray, tableProperties.asJava)
} catch {
case e: NoSuchTableException =>
throw QueryCompilationErrors.cannotReplaceMissingTableError(identifier, Some(e))
}
} else {
throw QueryCompilationErrors.cannotReplaceMissingTableError(identifier)
}
commitOrAbortStagedChanges(staged)
Seq.empty
}
override def output: Seq[Attribute] = Seq.empty
private def commitOrAbortStagedChanges(staged: StagedTable): Unit = {
Utils.tryWithSafeFinallyAndFailureCallbacks({
staged.commitStagedChanges()
})(catchBlock = {
staged.abortStagedChanges()
})
}
}
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