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For a Hadoop job, how will you write a custom partitioner?


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More MapReduce Interview Questions

Define Writable data types in Hadoop MapReduce?

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How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?

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Is it necessary to write a mapreduce job in java?

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How many Reducers run for a MapReduce job in Hadoop?

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what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

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How to set mappers and reducers for MapReduce jobs?

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What is the Reducer used for?

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What is heartbeat in hdfs? Explain.

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Can MapReduce program be written in any language other than Java?

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how Hadoop is different from other data processing tools?

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What are the main configuration parameters in a MapReduce program?

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What happens if the quantity of the reducer is 0 in mapreduce?

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