Explain the shuffle?
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Explain the basic architecture of Hadoop?
What is MapFile?
What is salary of hadoop developer?
What are sink processors?
How we can take Hadoop out of Safe Mode?
What is a secondary namenode?
How many instances of tasktracker run on a hadoop cluster?
Can we have multiple entries in the master files?
Which is the best hadoop certification?
How many instances of a jobtracker run on hadoop cluster?
What is HDFS High Availability?
What are channel selectors?