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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 MapReduce, ideally how many mappers should be configured on a slave?
What happens when a datanode fails ?
Explain job scheduling through JobTracker
What is the InputSplit in map reduce ?
Explain the features of Apache Spark because of which it is superior to Apache MapReduce?
How to set the number of reducers?
How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?
What are the main configuration parameters in a MapReduce program?
What is a scarce system resource?
What is the input type/format in MapReduce by default?
What is the difference between HDFS block and input split?
What is the key- value pair in Hadoop MapReduce?
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