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Explain InputSplit in Hadoop MapReduce?
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Explain what you understand by speculative execution
What is the process of changing the split size if there is limited storage space on Commodity Hardware?
What are the main components of MapReduce Job?
What is the need of MapReduce in Hadoop?
Is it important for Hadoop MapReduce jobs to be written in Java?
How can you add the arbitrary key-value pairs in your mapper?
How to create a custom key and custom value in MapReduce Job?
Explain the difference between a MapReduce InputSplit and HDFS block?
List out Hadoop's three configuration files?
how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?
How to set the number of mappers to be created in MapReduce?
Describe what happens to a mapreduce job from submission to output?
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