What is Row Key?
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Define a commodity hardware? Does commodity hardware include ram?
Is client the end user in HDFS?
What is a task instance in hadoop? Where does it run?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
What happens in a textinputformat?
what are Task Tracker and Job Tracker?
How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?
What are the most commonly defined input formats in Hadoop?
Can we have multiple entries in the master files?
What is a Combiner?
Does the hdfs client decide the input split or namenode?
What will you do when NameNode is down?
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