How can we look for the namenode in the browser?
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Explain how is hadoop different from other data processing tools?
What is the default replication factor?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is Apache Hadoop YARN?
How to resolve small file problem in hdfs?
Define a commodity hardware? Does commodity hardware include ram?
What is the relation between job and task in hadoop?
How to enable/configure the compression of map output data in hadoop?
What is the InputFormat ?
What is the difference between a Hadoop and Relational Database and Nosql?
How to configure hadoop to reuse JVM for mappers?
What is Row Key?
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