What is Hadoop streaming?
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What happens to a NameNode that has no data?
Why do we need a password-less ssh in fully distributed environment?
What are watches?
how to share the metastore within multiple users?
What do you know about sequencefileinputformat?
What are the functionalities of jobtracker?
What is the problem with HDFS and streaming data like logs
Who is a 'user' in HDFS?
What is the meaning of speculative execution in Hadoop? Why is it important?
Explain how can we change the split size if our commodity hardware has less storage space?
What is Writable & WritableComparable interface?
Should we use RAID in Hadoop or not?
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