What Mapper does?
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What is the use of Combiner?
On what basis name node distribute blocks across the data nodes?
Why do we use Hadoop?
Explain the core components of hadoop?
In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?
What is Apache Hadoop YARN?
What is the problem with small files in Apache Hadoop?
Explain the features of stand alone (local) mode?
Is hadoop open source?
How we can change Replication factor when Data is on the fly?
Explain the features of fully distributed mode?
What is the main purpose of HDFS fsck command?
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