Explain combiners.
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What happens when a DataNode fails during the write process?
What is the default input type in MapReduce?
What MapReduce framework consists of?
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
How to get the single file as the output from MapReduce Job?
Why Hadoop MapReduce?
What is the role of recordreader in hadoop mapreduce?
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How hadoop mapreduce works?
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Explain what is the function of mapreduce partitioner?
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