Explain the hadoop configuration files at present?
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what is SPF?
Which are the two types of 'writes' in HDFS?
when hadoop enter in safe mode?
Explain the features of pseudo mode?
shouldn't DFS be able to handle large volumes of data already?
What does job conf class do?
What is a Secondary Namenode? Is it a substitute to the Namenode?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
What is Distributed Cache?
How is security achieved in Apache Hadoop?
What is InputSplit and RecordReader?
What is a spill factor with respect to the ram?
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