What is the heartbeat used for?
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Is hadoop the future?
How can one increase replication factor to a desired value in Hadoop?
Why is Apache Spark faster than Apache Hadoop?
Which data storage components are used by hadoop?
What is the InputFormat ?
How to configure hadoop to reuse JVM for mappers?
How to change replication factor of files already stored in HDFS?
In which location Name Node stores its Metadata and why?
Explain the difference between gen1 and gen2 hadoop with regards to the namenode?
what is SPF?
What is the relation between job and task in hadoop?
What do shuffling do?
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