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What does ‘jps’ command do?
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More Apache Hadoop Interview Questions
Define a job tracker?
Rack awareness of Namenode?
What is the meaning of speculative execution in Hadoop? Why is it important?
Why is Apache Spark faster than Apache Hadoop?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
What is the purpose of button groups?
What happens to a namenode, when job tracker is down?
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