spark CreateIndexExec 源码
spark CreateIndexExec 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/CreateIndexExec.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 java.util
import scala.collection.JavaConverters._
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.analysis.IndexAlreadyExistsException
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.connector.catalog.index.SupportsIndex
import org.apache.spark.sql.connector.expressions.NamedReference
/**
* Physical plan node for creating an index.
*/
case class CreateIndexExec(
table: SupportsIndex,
indexName: String,
indexType: String,
ignoreIfExists: Boolean,
columns: Seq[(NamedReference, Map[String, String])],
properties: Map[String, String])
extends LeafV2CommandExec {
override protected def run(): Seq[InternalRow] = {
val propertiesWithIndexType: Map[String, String] = if (indexType.nonEmpty) {
properties + (SupportsIndex.PROP_TYPE -> indexType)
} else {
properties
}
val colProperties = new util.HashMap[NamedReference, util.Map[String, String]]
columns.foreach {
case (column, map) => colProperties.put(column, map.asJava)
}
try {
table.createIndex(
indexName, columns.unzip._1.toArray, colProperties, propertiesWithIndexType.asJava)
} catch {
case _: IndexAlreadyExistsException if ignoreIfExists =>
logWarning(s"Index $indexName already exists in table ${table.name}. Ignoring.")
}
Seq.empty
}
override def output: Seq[Attribute] = Seq.empty
}
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