What stored in HDFS?
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What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
How is security achieved in Apache Hadoop?
What is the InputFormat ?
How a task is scheduled by a jobtracker?
Name the examples of some companies that are using hadoop structure?
What do you know about keyvaluetextinputformat?
In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?
What do you know about sequencefileinputformat?
What is your favourite tool in the hadoop ecosystem?
Knox and Hadoop Development Tools?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
On what basis Namenode will decide which datanode to write on?
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