Why the name ‘hadoop’?
What is hbase in hadoop?
How we can take Hadoop out of Safe Mode?
What are the port numbers of namenode, job tracker and task tracker?
Name the examples of some companies that are using hadoop structure?
What are different types of filesystem?
What is structured data?
Is client the end user in HDFS?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
How does an hadoop application look like or their basic components?
Define streaming access?
Do we need to give a password, even if the key is added in ssh?
What do you know about keyvaluetextinputformat?