Which is the best hadoop certification?
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What does /var/hadoop/pids do?
What is IdentityMapper?
What is the heartbeat used for?
What is the difference between SQL and NoSQL?
Explain how do ‘map’ and ‘reduce’ works?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
Why the name ‘hadoop’?
What is a task instance in hadoop? Where does it run?
How many maximum jvm can run on a slave node?
Does Hadoop requires RAID?
Why is Apache Spark faster than Apache Hadoop?
What infrastructure do we need to process 100 TB data using Hadoop?
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