what if job tracker machine is down?
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Define data cleansing?
Tell me some major benefits of Hadoop?
Explain what is a task tracker in hadoop?
If DataNode increases, then do we need to upgrade NameNode in Hadoop?
What are the actions followed by hadoop?
What happen if one of the datanodes has much slower cpu?
Why do we need hadoop for big data analytics?
Do we require two servers for the namenode and the datanodes?
What is fsck?
Why we use intwritable instead of int? Why we use longwritable instead of long?
How many job tracker processes can run on a single Hadoop cluster?
Explain what is hadoop?
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