For a Hadoop job, how will you write a custom partitioner?
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Define Writable data types in Hadoop MapReduce?
How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?
Is it necessary to write a mapreduce job in java?
How many Reducers run for a MapReduce job in Hadoop?
what happens when Hadoop spawned 50 tasks for a job and one of the task failed?
How to set mappers and reducers for MapReduce jobs?
What is the Reducer used for?
What is heartbeat in hdfs? Explain.
Can MapReduce program be written in any language other than Java?
how Hadoop is different from other data processing tools?
What are the main configuration parameters in a MapReduce program?
What happens if the quantity of the reducer is 0 in mapreduce?
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