Unable to create spark-warehouse directory using spark-2.3.0 - scala

Question

I want to create a project with akka and spark. I added dependencies and some other dependencies too. Is these dependencies will cause any effect on using spark.
I have below sbt file
dependencyOverrides += "com.fasterxml.jackson.core" % "jackson-core" % "2.8.7"
dependencyOverrides += "com.fasterxml.jackson.core" % "jackson-databind" % "2.8.7"
dependencyOverrides += "com.fasterxml.jackson.module" % "jackson-module-scala_2.11" % "2.8.7"
lazy val commonSettings = Seq(
organization := "com.bitool.analytics",
scalaVersion := "2.11.12",
libraryDependencies ++= Seq(
"org.scala-lang.modules" %% "scala-async" % "0.9.6",
"com.softwaremill.macwire" %% "macros" % "2.3.0",
"com.softwaremill.macwire" %% "macrosakka" % "2.3.0",
"com.typesafe.akka" %% "akka-http" % "10.0.6",
"io.swagger" % "swagger-jaxrs" % "1.5.19",
"com.github.swagger-akka-http" %% "swagger-akka-http" % "0.9.1",
"io.circe" %% "circe-generic" % "0.8.0",
"io.circe" %% "circe-literal" % "0.8.0",
"io.circe" %% "circe-parser" % "0.8.0",
"io.circe" %% "circe-optics" % "0.8.0",
"org.scalafx" %% "scalafx" % "8.0.144-R12",
"org.scalafx" %% "scalafxml-core-sfx8" % "0.4",
"org.apache.spark" %% "spark-core" % "2.3.0",
"org.apache.spark" %% "spark-sql" % "2.3.0",
"org.apache.spark" %% "spark-hive" % "2.3.0",
"org.scala-lang" % "scala-xml" % "2.11.0-M4",
"mysql" % "mysql-connector-java" % "6.0.5"
)
)
lazy val root = (project in file(".")).
settings(commonSettings: _*).
settings(
name := "BITOOL-1.0"
)
ivyScala := ivyScala.value map {
_.copy(overrideScalaVersion = true)
}
fork in run := true
and below is my spark code
private val warehouseLocation = new File("spark-warehouse").getAbsolutePath
val conf = new SparkConf()
conf.setMaster("local[4]")
conf.setAppName("Bitool")
conf.set("spark.sql.warehouse.dir", warehouseLocation)
val SPARK = SparkSession
.builder().config(conf).enableHiveSupport()
.getOrCreate()
val SPARK_CONTEXT = SPARK.sparkContext
When I trying to execute this, It is creating metastore_db folder but spark-warehouse folder is not creating.

Answer 1

This directory is not created by getOrCreate. You can check it in the Spark source code: getOrCreate delegates its actions to SparkSession.getOrCreate, which is just a setter. All the internal tests and CliSuite use a snippet like this to prematurely initialize the dir: val warehousePath = Utils.createTempDir()
Instead, in the actual user code, you have to perform at least one data modification operation to materialize your warehouse directory. Try running something like that just after your code and check warehouse directory on the hard drive again:
import SPARK.implicits._
import SPARK.sql
sql("DROP TABLE IF EXISTS test")
sql("CREATE TABLE IF NOT EXISTS test (key INT, value STRING) USING hive")