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Showing posts with the label Reduce
Hadoop-streaming : Reduce Task In Pending State Says "no Room For Reduce Task."

Hadoop-streaming : Reduce Task In Pending State Says "no Room For Reduce Task."

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My map task completes successfully and I can see the application logs, but reducer stays in pending… Read more Hadoop-streaming : Reduce Task In Pending State Says "no Room For Reduce Task."
How To Get The Reducer To Emit Only Duplicates

How To Get The Reducer To Emit Only Duplicates

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I have a Mapper that is going through lots of data and emitting ID numbers as keys with the value o… Read more How To Get The Reducer To Emit Only Duplicates
How To Implement A Reduce Operation In Python Multiprocessing?

How To Implement A Reduce Operation In Python Multiprocessing?

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I'm an expert parallel programmer in OpenMP and C++. Now I'm trying to understand paralleli… Read more How To Implement A Reduce Operation In Python Multiprocessing?
Reverse List Using Map/reduce

Reverse List Using Map/reduce

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I am learning concepts of functional programming and trying out problem exercises. An exercise, Re… Read more Reverse List Using Map/reduce
How Can I Create Word Count Output In Python Just By Using Reduce Function?

How Can I Create Word Count Output In Python Just By Using Reduce Function?

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I have the following list of tuples: [('a', 1), ('a', 1), ('b', 1), ('c… Read more How Can I Create Word Count Output In Python Just By Using Reduce Function?