Modified the code like sparkConf.get(...).toBoolean to sparkConf.getBoolean(...)

Author: sarutak

core/src/main/scala/org/apache/spark/SecurityManager.scala

@@ -151,8 +151,8 @@ private[spark] class SecurityManager(sparkConf: SparkConf) extends Logging with
 
   private val authOn = sparkConf.getBoolean("spark.authenticate", false)
   // keep spark.ui.acls.enable for backwards compatibility with 1.0
-  private var aclsOn = sparkConf.getOption("spark.acls.enable").getOrElse(
-    sparkConf.get("spark.ui.acls.enable", "false")).toBoolean
+  private var aclsOn =
+    sparkConf.getBoolean("spark.acls.enable", sparkConf.getBoolean("spark.ui.acls.enable", false))
 
   // admin acls should be set before view or modify acls
   private var adminAcls: Set[String] =

core/src/main/scala/org/apache/spark/rdd/HadoopRDD.scala

@@ -131,7 +131,7 @@ class HadoopRDD[K, V](
   // used to build JobTracker ID
   private val createTime = new Date()
 
-  private val shouldCloneJobConf = sc.conf.get("spark.hadoop.cloneConf", "false").toBoolean
+  private val shouldCloneJobConf = sc.conf.getBoolean("spark.hadoop.cloneConf", false)
 
   // Returns a JobConf that will be used on slaves to obtain input splits for Hadoop reads.
   protected def getJobConf(): JobConf = {

yarn/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala

@@ -674,7 +674,7 @@ private[spark] object ClientBase extends Logging {
     addClasspathEntry(Environment.PWD.$(), env)
 
     // Normally the users app.jar is last in case conflicts with spark jars
-    if (sparkConf.get("spark.yarn.user.classpath.first", "false").toBoolean) {
+    if (sparkConf.getBoolean("spark.yarn.user.classpath.first", false)) {
       addUserClasspath(args, sparkConf, env)
       addFileToClasspath(sparkJar(sparkConf), SPARK_JAR, env)
       populateHadoopClasspath(conf, env)