Write a short note on the disadvantages of mapreduce
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What do sorting and shuffling do?
Why Mapreduce output written in local disk?
How to submit extra files(jars, static files) for Hadoop MapReduce job during runtime?
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
What is a scarce system resource?
Mention Hadoop core components?
What is identity mapper and identity reducer?
Does Partitioner run in its own JVM or shares with another process?
What are the fundamental configurations parameters specified in map reduce?
What is a mapreduce algorithm?
what are the main configuration parameters that user need to specify to run Mapreduce Job ?
What is a Speculative Execution in Hadoop MapReduce?
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