Spark App error: BindException: Can't assign requested address: Service 'sparkDriver'

Problem:

When you run your Spark Application or Spark Application unit tests, we may get the following error:

java.net.BindException: Can't assign requested address: Service 'sparkDriver' failed after 16 retries (on a random free port)! Consider explicitly setting the appropriate binding address for the service 'sparkDriver' (for example spark.driver.bindAddress for SparkDriver) to the correct binding address.

Solution:

To solve this problem, please do the following steps:

• Know your host name

         $ hostname

            my_hostname

• Execute the following command 

         $ sudo hostname -s 127.0.0.1

• Update "/etc/hosts" file with the following new entry

          $vi /etc/hosts

          127.0.0.1      my_hostname

• Finally export the following environment variable

          export SPARK_LOCAL_IP="127.0.0.1" 

Thats it.

It solved my problem in running my Spark application unit tests.