Define a task tracker?
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What are the functionalities of jobtracker?
Do we need to give a password, even if the key is added in ssh?
What is Input Split in hadoop?
Can you give us some more details about ssh communication between masters and the slaves?
How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?
What is the jobtracker?
How did you debug your Hadoop code ?
Where do you specify the Mapper Implementation?
What is the difference between a Hadoop and Relational Database and Nosql?
What is a task instance in hadoop? Where does it run?
What are the limitations of importing RDBMS tables into Hcatalog directly?
Explain why do we need hadoop?
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