What is a "reducer" in Hadoop?
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Is it possible to search for files using wildcards?
What are the identity mapper and reducer in MapReduce?
When Namenode is down what happens to job tracker?
How does fault tolerance work in mapreduce?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
Explain what are the basic parameters of a mapper?
What is MapReduce in Hadoop?
What is a Distributed Cache in Hadoop?
Detail description of the Reducer phases?
What is Hadoop Map Reduce ?
what does the conf.setMapper Class do ?
What is the best way to copy files between HDFS clusters?
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