What is high availability in hadoop?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
Explain a simple Map/Reduce problem.
how to share the metastore within multiple users?
What's the best way to copy files between HDFS clusters?
What are the steps to submit a Hadoop job?
What are sink processors?
What is the use of combiners in the hadoop framework?
What do you know about sequencefileinputformat?
Is it possible to provide multiple inputs to hadoop? If yes, explain.
How is the option in Hadoop to skip the bad records?
What is compute and Storage nodes?
How does a namenode handle the failure of the data nodes?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
Can hbase run without hadoop?
