What is the difference between TextinputFormat and KeyValueTextInputFormat class?
Can you explain clustering in mahout?
Explain the concept of resilient distributed dataset (rdd).
How we can take Hadoop out of Safe Mode?
How does cassandra perform read operation?
What is wal and hlog in hbase?
How to create table in hive for a json input file?
What are tokens in cassandra?
What is Small File Problem in Hadoop? How can it be resolved?
What are the different commands used to startup and shutdown Hadoop daemons?
Can there be no Reducer?
Can you execute Hadoop dfs Commands from Hive CLI? How?
What are the advantages of using map side join in mapreduce?
What are keywords?
When you should use Hbase?