What MapReduce framework consists of?
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What is a MapReduce Combiner?
In Hadoop, which file controls reporting in Hadoop?
Explain how mapreduce works.
How to write a custom partitioner for a Hadoop MapReduce job?
Mention what is the next step after mapper or maptask?
Explain combiners.
Map reduce jobs take too long. What can be done to improve the performance of the cluster?
How do reducers communicate with each other?
What is KeyValueTextInputFormat in Hadoop MapReduce?
Why Mapper runs in heavy weight process and not in a thread in MapReduce?
Can there be no Reducer?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
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