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- W2781260215 abstract "Abstract In this paper, we analyze applicability of various load-balancing methods in countering data skew in MapReduce computations. A MapReduce job consists of several phases: mapping, shuffling data, sorting and reducing. The distribution of the work in the last three phases is data-driven, and unequal distribution of the data keys may cause imbalance in the computation completion times and prolonged execution of the whole job. We propose algorithms of four different types for balancing computational effort in reduce-heavy MapReduce jobs and evaluate their performance under various degrees of data skew and system parameters. By applying an innovative method of visualizing algorithm dominance conditions, we are able to determine conditions under which certain load-balancing algorithms are capable of scheduling MapReduce computations well. We conclude that no single algorithm is a panacea and hybrid approaches are necessary." @default.
- W2781260215 created "2018-01-05" @default.
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- W2781260215 date "2018-02-01" @default.
- W2781260215 modified "2023-09-25" @default.
- W2781260215 title "Comparing load-balancing algorithms for MapReduce under Zipfian data skews" @default.
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- W2781260215 doi "https://doi.org/10.1016/j.parco.2017.12.003" @default.
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