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What do sorting and shuffling do?
Explain about the partitioning, shuffle and sort phase
What are the four basic parameters of a reducer?
what is distributed cache in mapreduce framework?
What is the inputsplit in map reduce software?
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?
Can MapReduce program be written in any language other than Java?
How to set which framework would be used to run mapreduce program?
List out Hadoop's three configuration files?
Mention Hadoop core components?
What is RecordReader in a Map Reduce?
Define Writable data types in MapReduce?
What happens when a DataNode fails during the write process?
Compare RDBMS with Hadoop MapReduce.
