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What are the the issues associated with the map and reduce slots based mechanism in mapReduce?
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In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
When should you use sequencefileinputformat?
What does a 'MapReduce Partitioner' do?
What is the job of blend () and repartition () in Map Reduce?
what are the most common input formats defined in Hadoop?
how Hadoop is different from other data processing tools?
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Explain the difference between a MapReduce InputSplit and HDFS block?
Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
What are combiners? When should I use a combiner in my MapReduce Job?
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