Explain the need for MapReduce while programming in Apache Pig?
What is wal and hlog in hbase?
Explain a simple Map/Reduce problem.
Explain apache spark streaming? How is the processing of streaming data achieved in apache spark?
What is spark yarn executor memoryoverhead?
What is the standalone mode in spark cluster?
Name some sources from where Spark streaming component can process real-time data?
What is fluming?
What are snapshots and how do you create one in cassandra?
How to restart NameNode or all the daemons in Hadoop?
Explain repository in apache ambari?
What do slaves consist of?
Which command do we use to show the version?
Explain about the different cluster managers in Apache Spark
What are the functionalities of jobtracker?