what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
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What are the various InputFormats in Hadoop?
Why Hadoop MapReduce?
what are the most common input formats defined in Hadoop?
How to set which framework would be used to run mapreduce program?
Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
What is mapper in map reduce?
Differentiate Reducer and Combiner in Hadoop MapReduce?
What are ‘maps’ and ‘reduces’?
Detail description of the Reducer phases?
What is the core of the job in MapReduce framework?
Explain the process of spilling in MapReduce?
Is reduce-only job possible in Hadoop MapReduce?