Why is hadoop faster?
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Rack awareness of Namenode?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
What is oozie in hadoop?
What are the two main components of ResourceManager?
Does google use hadoop?
What is the difference between SQL and NoSQL?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
What is the difference between a Hadoop and Relational Database and Nosql?
explain Metadata in Namenode?
How to restart Namenode?
Which files are used by the startup and shutdown commands?
What is a speculative execution in Apache Hadoop MapReduce?