Invalid Spark URL in local spark session

Question

since updating to Spark 2.3.0, tests which are run in my CI (Semaphore) fail due to a allegedly invalid spark url when creating the (local) spark context:

18/03/07 03:07:11 ERROR SparkContext: Error initializing SparkContext.
org.apache.spark.SparkException: Invalid Spark URL: spark://HeartbeatReceiver@LXC_trusty_1802-d57a40eb:44610
    at org.apache.spark.rpc.RpcEndpointAddress$.apply(RpcEndpointAddress.scala:66)
    at org.apache.spark.rpc.netty.NettyRpcEnv.asyncSetupEndpointRefByURI(NettyRpcEnv.scala:134)
    at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:101)
    at org.apache.spark.rpc.RpcEnv.setupEndpointRef(RpcEnv.scala:109)
    at org.apache.spark.util.RpcUtils$.makeDriverRef(RpcUtils.scala:32)
    at org.apache.spark.executor.Executor.<init>(Executor.scala:155)
    at org.apache.spark.scheduler.local.LocalEndpoint.<init>(LocalSchedulerBackend.scala:59)
    at org.apache.spark.scheduler.local.LocalSchedulerBackend.start(LocalSchedulerBackend.scala:126)
    at org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:164)
    at org.apache.spark.SparkContext.<init>(SparkContext.scala:500)
    at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2486)
    at org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:930)
    at org.apache.spark.sql.SparkSession$Builder$$anonfun$7.apply(SparkSession.scala:921)
    at scala.Option.getOrElse(Option.scala:121)
    at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:921)

The spark session is created as following:

val sparkSession: SparkSession = SparkSession
.builder
.appName(s"LocalTestSparkSession")
.config("spark.broadcast.compress", "false")
.config("spark.shuffle.compress", "false")
.config("spark.shuffle.spill.compress", "false")
.master("local[3]")
.getOrCreate

Before updating to Spark 2.3.0, no problems were encountered in version 2.2.1 and 2.1.0. Also, running the tests locally works fine.

Answer 1

Change the SPARK_LOCAL_HOSTNAME to localhost and try.

export SPARK_LOCAL_HOSTNAME=localhost

Answer 2

This has been resolved by setting sparkSession config "spark.driver.host" to the IP address.

It seems that this change is required from 2.3 onwards.

Answer 3

If you don't want to change the environment variable, you can change the code to add the config in the SparkSession builder (like Hanisha said above).

In PySpark:

spark = SparkSession.builder.config("spark.driver.host", "localhost").getOrCreate()