What is the default level of parallelism in apache spark?
Define the level of parallelism and its need in spark streaming?
Compare Hadoop and Spark?
What is a spark standalone cluster?
How to identify that given operation is transformation/action in your program?
Explain about transformations and actions in the context of RDDs.
Explain the flatMap operation on Apache Spark RDD?
How Spark uses Hadoop?
How do I download spark?
What is cluster in apache spark?
How does reducebykey work in spark?
Which language is best for spark?
Do you need to install spark on all nodes of yarn cluster?
Explain accumulators in apache spark.
How do I optimize my spark code?