How Mapper is instantiated in a running job?
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What is the main purpose of HDFS fsck command?
What are the characteristics of hadoop framework?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
If a data Node is full how it's identified?
What is 'Key value pair' in HDFS?
explain Metadata in Namenode?
Main Components of Hadoop?
Explain the overview of hadoop history breifly?
what are Task Tracker and Job Tracker?
Name the various types of lists supported by bootstrap.
when hadoop enter in safe mode?
What is the communication channel between client and namenode/datanode?
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