What is the purpose of RawComparator interface?
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What is the InputFormat ?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
Define streaming access?
What is compute and Storage nodes?
Can you explain how do ‘map’ and ‘reduce’ work?
What do you know about keyvaluetextinputformat?
Do we need to give a password, even if the key is added in ssh?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
what is the default replication factor in HDFS?
Define a daemon?
Why do we use Hadoop?
Is hadoop a memory?
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