Can you explain speculative execution?
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Which operating system(s) are supported for production hadoop deployment?
Give me an example of document database ?
Ideally what should be the replication factor in hadoop?
What are the tools used in big data?
If datanodes increase, then do we need to upgrade namenode?
How jobtracker assign tasks to the tasktracker?
Can you explain rack awareness?
How to handle bad records during parsing?
What are some typical functions of job tracker in hadoop?
How to add/delete a Node to the existing cluster?
Define a record reader?
What is the difference between a hadoop database and relational database?
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