Explain how is hadoop different from other data processing tools?
What are the basic available commands in Hadoop sqoop ?
What is Hadoop?
What is safe mode in Hadoop?
What is the difference between traditional RDBMS and Hadoop?
Explain the features of fully distributed mode?
What is DistributedCache and its purpose?
Rack awareness of Namenode?
Give the use of the bootstrap panel.
What is a secondary namenode?
What are different hdfs dfs shell commands to perform copy operation?
What if a namenode has no data?
Who invented hadoop?