what is "map" and what is "reducer" in Hadoop?
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Is Mapreduce Required For Impala? Will Impala Continue To Work As Expected If Mapreduce Is Stopped?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
How would you tackle calculating the number of unique visitors for each hour by mining a huge apache log? You can use post processing on the output of the mapreduce job.
What is the key- value pair in MapReduce?
Write a short note on the disadvantages of mapreduce
How does Mappers run method works?
How do Hadoop MapReduce works?
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How many Mappers run for a MapReduce job in Hadoop?
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What is the Hadoop MapReduce API contract for a key and value Class?
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