What does name-node mean in hadoop?
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Explain how Hadoop cluster hardware planning and provisioning is done?
What is tasktracker in hadoop?
How often DataNode send heartbeat to NameNode in Hadoop?
What is partitioning?
What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?
Can you explain record reader?
Compare Apache Hadoop and Apache Spark?
Is it possible to rename the output file, and if so, how?
Define a udf?
What are 'slaves' and 'masters' in Hadoop?
Clarify what is sequence file input format?
How is security achieved in Hadoop?
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