How to change replication factor of files already stored in HDFS?
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What is a namenode? How many instances of namenode run on a hadoop cluster?
What are the modules that constitute the Apache Hadoop 2.0 framework?
What are the basic available commands in Hadoop sqoop ?
What is version-id mismatch error in hadoop?
How a task is scheduled by a jobtracker?
Explain the master class and the output class do?
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Why is Apache Spark faster than Apache Hadoop?
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