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Clarify what is sqoop in hadoop?
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What is the role of the secondary namenode?
How to use combiner in hadoop ?
What is check pointing in hadoop?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
Explain some important features of hadoop?
Comparison between Secondary NameNode and Checkpoint Node in Hadoop?
What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
Is Namenode machine same as DataNode machine as in terms of hardware?
Are job tracker and task trackers present in separate machines?
What is tasktracker in hadoop?
How does hadoop achieve fault tolerance?
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