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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,
* 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.hive
import org.apache.spark.annotation.{Experimental, InterfaceStability}
import org.apache.spark.sql._
import org.apache.spark.sql.catalyst.analysis.Analyzer
import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
import org.apache.spark.sql.catalyst.rules.Rule
import org.apache.spark.sql.execution.SparkPlanner
import org.apache.spark.sql.execution.datasources._
import org.apache.spark.sql.hive.client.HiveClient
import org.apache.spark.sql.internal.{BaseSessionStateBuilder, SessionResourceLoader, SessionState}
/**
* Builder that produces a Hive-aware `SessionState`.
*/
@Experimental
@InterfaceStability.Unstable
class HiveSessionStateBuilder(session: SparkSession, parentState: Option[SessionState] = None)
extends BaseSessionStateBuilder(session, parentState) {
private def externalCatalog: HiveExternalCatalog =
session.sharedState.externalCatalog.asInstanceOf[HiveExternalCatalog]
/**
* Create a Hive aware resource loader.
*/
override protected lazy val resourceLoader: HiveSessionResourceLoader = {
val client: HiveClient = externalCatalog.client.newSession()
new HiveSessionResourceLoader(session, client)
}
/**
* Create a [[HiveSessionCatalog]].
*/
override protected lazy val catalog: HiveSessionCatalog = {
val catalog = new HiveSessionCatalog(
externalCatalog,
session.sharedState.globalTempViewManager,
new HiveMetastoreCatalog(session),
functionRegistry,
conf,
SessionState.newHadoopConf(session.sparkContext.hadoopConfiguration, conf),
sqlParser,
resourceLoader)
parentState.foreach(_.catalog.copyStateTo(catalog))
catalog
}
/**
* A logical query plan `Analyzer` with rules specific to Hive.
*/
override protected def analyzer: Analyzer = new Analyzer(catalog, conf) {
override val extendedResolutionRules: Seq[Rule[LogicalPlan]] =
new ResolveHiveSerdeTable(session) +:
new FindDataSourceTable(session) +:
new ResolveSQLOnFile(session) +:
customResolutionRules
override val postHocResolutionRules: Seq[Rule[LogicalPlan]] =
new DetermineTableStats(session) +:
RelationConversions(conf, catalog) +:
PreprocessTableCreation(session) +:
PreprocessTableInsertion(conf) +:
DataSourceAnalysis(conf) +:
HiveAnalysis +:
customPostHocResolutionRules
override val extendedCheckRules: Seq[LogicalPlan => Unit] =
PreWriteCheck +:
customCheckRules
}
/**
* Planner that takes into account Hive-specific strategies.
*/
override protected def planner: SparkPlanner = {
new SparkPlanner(session.sparkContext, conf, experimentalMethods) with HiveStrategies {
override val sparkSession: SparkSession = session
override def extraPlanningStrategies: Seq[Strategy] =
super.extraPlanningStrategies ++ customPlanningStrategies
override def strategies: Seq[Strategy] = {
experimentalMethods.extraStrategies ++
extraPlanningStrategies ++ Seq(
FileSourceStrategy,
DataSourceStrategy(conf),
SpecialLimits,
InMemoryScans,
HiveTableScans,
Scripts,
Aggregation,
JoinSelection,
BasicOperators
)
}
}
}
override protected def newBuilder: NewBuilder = new HiveSessionStateBuilder(_, _)
}
class HiveSessionResourceLoader(
session: SparkSession,
client: HiveClient)
extends SessionResourceLoader(session) {
override def addJar(path: String): Unit = {
client.addJar(path)
super.addJar(path)
}
}
