What Mapper does?
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Does this lead to security issues?
What is HDFS - Hadoop Distributed File System?
What is the difference between hadoop and other data processing tools?
Why do we use Hadoop?
Is hadoop the future?
What is rack-aware replica placement policy?
how is a file of the size 1 GB uncompressed
how to share the metastore within multiple users?
What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?
Explain why the name ‘hadoop’?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
What is the difference between a Hadoop and Relational Database and Nosql?
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