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How is security achieved in Hadoop?
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In hadoop_pid_dir, what does pid stands for?
What are the hadoop configuration files at present?
List Hadoop’s three configuration files?
Can I set the number of reducers to zero?
Explain the key benefits of using storm for real time processing?
Why do we need Hadoop?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
What are some typical functions of Job Tracker?
What are the important modes of hadoop?
If the hadoop administrator needs to make a change, which configuration file does he need to change?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
What are some of the characteristics of Hadoop framework?
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