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Large Scale and Big Data
book

Large Scale and Big Data

by Sherif Sakr, Mohamed Gaber
June 2014
Intermediate to advanced content levelIntermediate to advanced
636 pages
23h 13m
English
Auerbach Publications
Content preview from Large Scale and Big Data
64 Large Scale and Big Data
experiments of the study show that the range index improves the perfor-
mance of MapReduce by a factor of 2 in the selection task and a factor of 10
in the join task when selectivity is high.
There are two kinds of decoders for parsing the input records: mutable
decoders and immutable decoders. The study claims that only immutable
decoders introduce performance bottleneck. To handle database-like work-
loads, MapReduce users should strictly use mutable decoders. A mutable
decoder is faster than an immutable decoder by a factor of 10 and improves
the performance of selection by a factor of 2. Using a mutable decoder, even
parsing the text record is efcient.
Map-side sorting exerts negative performance effect on ...
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Publisher Resources

ISBN: 9781466581500