Spark standalone workers, executors and JVMs

I am still a little bit confused about workers, executors and JVMs in standalone mode. Are worker processes and executors independent JVMs or do executors run within the worker JVM? I have some memory-rich nodes (192GB) and I would like to avoid deploying massive JVMs due to well known performance

Re: How can I read this avro file using spark scala?

I am confused as to whether avro support was merged into Spark 1.2 or it is still an independent library. I see some people writing sqlContext.avroFile similarly to jsonFile but this does not work for me, nor do I see this in the Scala docs. -- View this message in context: