Does diesel engine have spark plug?
What is serialization in spark?
What are the components of spark?
To use Spark on an existing Hadoop Cluster, do we need to install Spark on all nodes of Hadoop?
What are transformations in spark?
What is action, how it process data in apache spark
Difference between groupByKey vs reduceByKey in Apache Spark?
What are the various storages from which Spark can read data?
What database does spark use?
If map reduce is inferior to spark then is there any benefit of learning it?
What is lazy evaluation and how is it useful?
Which is better hadoop or spark?
Why is spark used?
What are shared variables?
How rdd can be created in spark?