What is the jobtracker?
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How is security achieved in Apache Hadoop?
What happens to job tracker when namenode is down?
In which location Name Node stores its Metadata and why?
What is a speculative execution in Apache Hadoop MapReduce?
What is salary of hadoop developer?
How can one increase replication factor to a desired value in Hadoop?
What is Hadoop?
What do you know by storage and compute node?
What is the use of combiners in the hadoop framework?
Is client the end user in HDFS?
Explain a simple Map/Reduce problem.
How to change Replication Factor For below cases ?