What is Apache Hadoop?
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How the Client communicates with HDFS?
What exactly is hadoop?
Rack awareness of Namenode?
Explain a simple Map/Reduce problem.
Are Namenode and job tracker on the same host?
What is HDFS High Availability?
What is zookeeper in hadoop?
What is speculative execution in Hadoop?
What is the difference between Hadoop and Traditional RDBMS?
What is IdentityMapper?
How to enable trash/recycle bin in hadoop?
Define fault tolerance?
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