What do you mean by taskinstance?
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Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
How is security achieved in Apache Hadoop?
Define a combiner?
How many instances of JobTracker can run on a Hadoop Cluser?
What do you know about keyvaluetextinputformat?
Explain how is hadoop different from other data processing tools?
What are watches?
How many Daemon processes run on a Hadoop system?
How to enable recycle bin in hadoop?
Where is the Mapper Output intermediate kay-value data stored ?
What is a Secondary Namenode? Is it a substitute to the Namenode?
what is a datanode?
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