distributed file system and map reduce
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Last updated 8:40 PM on 1/12/26
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4 Terms
1
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map
applies a user map function to each piece of data
done parallel accross all nodes
key values are produced
2
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shuffle
group key so pairs with same key are in same node
3
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reduce
sorts shuffled data by keys
uses reduce funtion
4
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keys and values must be
value: serialisable
keys: comparable
Note 
Flashcards (152)