What hadoop does in safe mode?
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what are the steps involved in decommissioning removing
What are the important differences between apache and hadoop?
Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
What is the jobtracker?
Explain the Job OutputFormat?
Is a job split into maps?
Can you tell us more about ssh?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
Explain the basic difference between traditional rdbms and hadoop?
How can I restart namenode?
What is salary of hadoop developer?
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