What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
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did you maintain the hadoop cluster in-house or used hadoop in the cloud?
What do you know about keyvaluetextinputformat?
How would you tackle counting words in several text documents?
How does a namenode handle the failure of the data nodes?
What is keyvaluetextinputformat?
What is yarn in hadoop?
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What is a “Distributed Cache” in Apache Hadoop?
Explain how is hadoop different from other data processing tools?
Define a combiner?
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Is fs.mapr.working.dir a single directory?
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