What is mapper in map reduce?
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What is a "reducer" in Hadoop?
What is Mapper in Hadoop MapReduce?
It can be possible that a Job has 0 reducers?
What is the need of MapReduce in Hadoop?
Can there be no Reducer?
For a Hadoop job, how will you write a custom partitioner?
How many Mappers run for a MapReduce job?
What is the purpose of textinputformat?
How to set mappers and reducers for MapReduce jobs?
What is the default value of map and reduce max attempts?
Is it possible to search for files using wildcards?
what is a sequence file in Hadoop?
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