Explain write ahead log(journaling) in spark?
Can hadoop replace relational database?
What is the role of a zookeeper in a kafka cluster?
Is spark based on hadoop?
Is it possible to create multiple table in hive for same data?
Tell any two feature Flume?
What are the features of RDD, that makes RDD an important abstraction of Spark?
Is it possible to iterate through the rows of HBase table in reverse order?
What is HBase Shell?
What are the different execution modes available in Pig?
Explain avrostorage function?
How many maps are there in a particular job?
How to use Avro?
Which are the various data sources available in spark sql?
What are the four basic parameters of a reducer?