What is the function of mapreduce partitioner?
How to create a custom key and custom value in MapReduce Job?
How to create custom key and custom value in MapReduce Job?
Explain what is shuffling in mapreduce?
What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?
Explain what is “map” and what is "reducer" in hadoop?
What is the difference between an RDBMS and Hadoop?
Explain the difference between a MapReduce InputSplit and HDFS block?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
Why can aggregation not be done in Mapper in MapReduce?
Where is Mapper output stored?
Explain what does the conf.setMapper Class do in MapReduce?
Define Writable data types in Hadoop MapReduce?