Define a datanode?
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Mention what is the use of Context Object?
What is partioner in hadoop? Where does it run,mapper or reducer?
What are the important differences between apache and hadoop?
What is MapFile?
What should be the ideal replication factor in Hadoop Cluster?
What is salary of hadoop developer?
What are the most commonly defined input formats in Hadoop?
How to write a Custom Key Class?
If a data Node is full how it's identified?
Which is the best hadoop certification?
What if rack 2 and datanode fails?
What is a “Distributed Cache” in Apache Hadoop?
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