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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.thriftserver
import java.io.PrintStream
import scala.collection.JavaConverters._
import org.apache.spark.{SparkConf, SparkContext}
import org.apache.spark.internal.Logging
import org.apache.spark.sql.{SparkSession, SQLContext}
import org.apache.spark.sql.hive.{HiveSessionState, HiveUtils}
import org.apache.spark.util.Utils
/** A singleton object for the master program. The slaves should not access this. */
private[hive] object SparkSQLEnv extends Logging {
logDebug("Initializing SparkSQLEnv")
var sqlContext: SQLContext = _
var sparkContext: SparkContext = _
def init() {
if (sqlContext == null) {
val sparkConf = new SparkConf(loadDefaults = true)
val maybeSerializer = sparkConf.getOption("spark.serializer")
val maybeKryoReferenceTracking = sparkConf.getOption("spark.kryo.referenceTracking")
// If user doesn't specify the appName, we want to get [SparkSQL::localHostName] instead of
// the default appName [SparkSQLCLIDriver] in cli or beeline.
val maybeAppName = sparkConf
.getOption("spark.app.name")
.filterNot(_ == classOf[SparkSQLCLIDriver].getName)
sparkConf
.setAppName(maybeAppName.getOrElse(s"SparkSQL::${Utils.localHostName()}"))
.set(
"spark.serializer",
maybeSerializer.getOrElse("org.apache.spark.serializer.KryoSerializer"))
.set(
"spark.kryo.referenceTracking",
maybeKryoReferenceTracking.getOrElse("false"))
sparkContext = new SparkContext(sparkConf)
sqlContext = SparkSession.withHiveSupport(sparkContext).wrapped
val sessionState = sqlContext.sessionState.asInstanceOf[HiveSessionState]
sessionState.metadataHive.setOut(new PrintStream(System.out, true, "UTF-8"))
sessionState.metadataHive.setInfo(new PrintStream(System.err, true, "UTF-8"))
sessionState.metadataHive.setError(new PrintStream(System.err, true, "UTF-8"))
sqlContext.setConf("spark.sql.hive.version", HiveUtils.hiveExecutionVersion)
if (log.isDebugEnabled) {
sessionState.hiveconf.getAllProperties.asScala.toSeq.sorted
.foreach { case (k, v) => logDebug(s"HiveConf var: $k=$v") }
}
}
}
/** Cleans up and shuts down the Spark SQL environments. */
def stop() {
logDebug("Shutting down Spark SQL Environment")
// Stop the SparkContext
if (SparkSQLEnv.sparkContext != null) {
sparkContext.stop()
sparkContext = null
sqlContext = null
}
}
}
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