when hadoop enter in safe mode?
Define a combiner?
What do you know about sequencefileinputformat?
Explain what happens in textinformat ?
What are the different methods to run Spark over Apache Hadoop?
How is HDFS fault tolerant?
What is keyvaluetextinputformat?
What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
How to come out of the insert mode?
How many instances of tasktracker run on a hadoop cluster?
How is hadoop different from other data processing tools?
What is HDFS block size and what did you chose in your project?
What are the network requirements for using hadoop?