What are sink processors?
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Which is the best hadoop certification?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
How is the option in Hadoop to skip the bad records?
How the HDFS Blocks are replicated?
What is Apache Hadoop YARN?
How to restart Namenode?
Can NameNode and DataNode be a commodity hardware?
What is difference between split and block in hadoop?
What is the use of Combiner?
Explain the use of tasktracker in the hadoop cluster?
What is nlineoutputformat?
What is Hadoop serialization?