Write a Mapreduce Program for Character Count ?
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Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?
Explain slot in Hadoop Map-Reduce v1?
In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
Which among the two is preferable for the project- Hadoop MapReduce or Apache Spark?
Is reduce-only job possible in Hadoop MapReduce?
What are the configuration parameters in the 'MapReduce' program?
Differentiate Reducer and Combiner in Hadoop MapReduce?
Does Partitioner run in its own JVM or shares with another process?
How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?
What counter in Hadoop MapReduce?
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.
How do reducers communicate with each other?
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