What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?
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Does this lead to security issues?
What happens to a namenode, when job tracker is down?
what should be the ideal replication factor in hadoop?
how is a file of the size 1 GB uncompressed
What is cloudera and why it is used?
What should be the ideal replication factor in Hadoop Cluster?
On What concept the Hadoop framework works?
What is crontab? Explain with suitable example?
How can we change the split size if our commodity hardware has less storage space?
What is the problem with HDFS and streaming data like logs
What problems have you faced when you are working on Hadoop code?
What is partioner in hadoop? Where does it run,mapper or reducer?
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