What is rack-aware replica placement policy?
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On What concept the Hadoop framework works?
Explain the core components of hadoop?
What is a Task instance in Hadoop? Where does it run?1
What alternate way does HDFS provides to recover data in case a Namenode
What are the different types of Znodes?
What is the meaning of speculative execution in Hadoop? Why is it important?
Explain the difference between NameNode
What is the best hardware configuration to run Hadoop?
How is hadoop different from other data processing tools?
What are combiners and its purpose?
Main Components of Hadoop?
What are the port numbers of namenode, job tracker and task tracker?