Does Partitioner run in its own JVM or shares with another process?
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When is it suggested to use a combiner in a MapReduce job?
how JobTracker schedules a task ?
What do you understand by mapreduce?
Why MapReduce uses the key-value pair to process the data?
In MapReduce Data Flow, when Combiner is called?
How to compress mapper output in Hadoop?
Define Writable data types in Hadoop MapReduce?
Explain the process of spilling in MapReduce?
Explain InputSplit in Hadoop MapReduce?
when do reducers play their role in a mapreduce task?
What happens when the node running the map task fails before the map output has been sent to the reducer?
What is Reduce only jobs?
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