What is Hadoop streaming?
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What do you know about keyvaluetextinputformat?
What is high availability in hadoop?
What is a heartbeat in HDFS?
Which one is default InputFormat in Hadoop ?
What are the site-specific configuration files in Hadoop?
How many instances of JobTracker can run on a Hadoop Cluser?
Explain what is the purpose of RecordReader in Hadoop?
Define a namenode?
How indexing is done in HDFS?
How to come out of the insert mode?
What is a secondary namenode?
Explain a simple Map/Reduce problem.
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