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What Mapper does?


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More Apache Hadoop Interview Questions

Does this lead to security issues?

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What is HDFS - Hadoop Distributed File System?

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What is the difference between hadoop and other data processing tools?

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Why do we use Hadoop?

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Is hadoop the future?

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What is rack-aware replica placement policy?

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how is a file of the size 1 GB uncompressed

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how to share the metastore within multiple users?

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What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

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Explain why the name ‘hadoop’?

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Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

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What is the difference between a Hadoop and Relational Database and Nosql?

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