Do we need to give a password, even if the key is added in ssh?
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How can we change the split size if our commodity hardware has less storage space?
Define a combiner?
What are the most commonly defined input formats in Hadoop?
How to keep HDFS cluster balanced?
Have you ever used Counters in Hadoop. Give us an example scenario?
If a data Node is full how it's identified?
What is the full form of fsck?
What is Rack awareness?
Explain use cases where SequenceFile class can be a good fit?
What exactly is hadoop?
What is the difference between traditional RDBMS and Hadoop?
What is difference between split and block in hadoop?