NullPointerException: Cannot start embedded cassandra

[Malte Bücken]

I am writing my integration tests and try to start an embedded cassandra server:

abstract class GraphSpec extends WordSpec with MustMatchers with OptionValues with BeforeAndAfter with SharedEmbeddedCassandra

trait SharedEmbeddedCassandra extends EmbeddedCassandra {
def clearCache(): Unit = CassandraConnector.evictCache()
}

class GraphTest extends GraphSpec {
useCassandraConfig("cassandra.yaml")
...
}
and I always get:

java.lang.NullPointerException at
com.datastax.spark.connector.embedded.EmbeddedIO$class.closeAfterUse(Embedded.scala:26)

cassandra.yaml lies in test/resources/cassandra.yaml, but I tried various other locations including main resources

I run the test with sbt test. How do I get the embedded server to work?

[Helena Edelson]

Hi Malte,

I've seen that before when trying to use it outside the connector repo. I have a ticket somewhere to investigate that. It work for our IT tests.

I've created a new ticket https://datastax-oss.atlassian.net/browse/SPARKC-24.
Stay tuned...

Helena
@helenaedelson

[Hugo Ferreira]

Hello,

Had the same issue. Solved it by placing the file in the /conf directory in the root of my project. Maybe this will work for you too.

HTHs

[Chad Retz]

Placing in conf/ did not solve it for me. This is an issue with using the system classloader IMO. I have updated the JIRA issue.

[vimal dinakaran]

Hi All,
I am seeing the same issue . How did you guys resolve this ?

[Eric Meisel]

To those reading this and still have no idea what happened - you have to use the version layer to leverage your own cassandra.yaml file. The default version is 3, so put it in test/resources/3/