What is MapReduce
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What is the difference between Hadoop developer and administrator?
A developer can take over the job of a Hadoop administrator whereas an admin can't play the role of a developer unless he has adequate programming knowledge. However, with the huge and complex production environment, now companies need dedicated Hadoop administrators.DBA Responsibilities Performed by a Hadoop Administrator:
Data modelling, design & implementation based on recognized standards.
Software installation and configuration.
Database backup and recovery.
Database connectivity and security.
Performance monitoring and tuning.Does Hadoop require coding?
Although Hadoop is a Java-encoded open-source software framework for distributed storage and processing of large amounts of data, Hadoop does not require much coding. ... All you have to do is enroll in a Hadoop certification course and learn Pig and Hive, both of which require only the basic understanding of SQL
Disk space management.
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