Hello Sidh,
There's no official GemFire Spark Connector as far as I'm aware. There is, however, some example projects about how to do this on Internet, the following is as an example of a GemFire-Spark Connector developed by field engineers at Pivotal: https://github.com/Pivotal-Field-Engineering/geode-spark-connector
It's not officially supported and has been inactive for at least two years, so be careful if you plan to use it in production environments.
Best regards.