What is identity mapper and reducer? In which cases can we use them?
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what are the main configuration parameters that user need to specify to run Mapreduce Job ?
What MapReduce framework consists of?
What is identity mapper and identity reducer?
What is streaming?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
Why do we need MapReduce during Pig programming?
Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
How many InputSplits is made by a Hadoop Framework?
What is a "map" in Hadoop?
Mention when to use Map reduce mode?
What is the Job interface in MapReduce framework?
What is Text Input Format?
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