Why Hadoop MapReduce?
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What is a map side join?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
What is the core of the job in MapReduce framework?
How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?
How do reducers communicate with each other?
What are the various input and output types supported by mapreduce?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
Where is Mapper output stored?
what is a Task Tracker in Hadoop?
What is the next step after Mapper or MapTask?
Define speculative execution?
mapper or reducer?