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How many Reducers run for a MapReduce job?
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Is it possible to search for files using wildcards?
Why the output of map tasks are stored (spilled ) into local disc and not in hdfs?
In MapReduce Data Flow, when Combiner is called?
What happens when the node running the map task fails before the map output has been sent to the reducer?
Explain the input type/format in mapreduce by default?
What is Mapper in Hadoop MapReduce?
In Map Reduce why map write output to Local Disk instead of HDFS?
what does the conf.setMapper Class do ?
what is distributed cache in mapreduce framework?
What is the difference between map and reduce?
Explain slot in Hadoop Map-Reduce v1?
What combiners are and when you should utilize a combiner in a map reduce job?
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