what is the typical block size of an HDFS block?
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What are the hadoop's three configuration files?
What is the full form of fsck?
Explain the wordcount implementation via hadoop framework ?
What does the command mapred.job.tracker do?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
How to enable recycle bin in hadoop?
Explain how input and output data format of the hadoop framework?
What is rack-aware replica placement policy?
Command to format the NameNode?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
What is the difference between SQL and NoSQL?
Is map like a pointer?
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