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Accelerating MapReduce on Commodity Clusters: An SSD-Empowered Approach

Accelerating MapReduce on Commodity Clusters: An SSD-Empowered Approach

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 Accelerating MapReduce on Commodity Clusters: An SSD-Empowered Approach

MapReduce, as a programming model and implementation for processing large data sets on clusters with hundreds or thousands of nodes, has gained wide adoption. In spite of the fact, we found that MapReduce on commodity clusters, which are usually equipped with limited memory and hard-disk drive (HDD) and have processors of multiple or many cores, does not scale as expected as the number of processor cores increases. The key reason for this is that the underlying low-speed HDD storage cannot meet the requirement of frequent IO operations. Though in-memory caching can improve IO, it is costly and sometimes cannot get the desired result either due to memory limitation. To deal with the problem and make MapReduce more scalable on commodity clusters, we present mpCache, a solution that utilizes solid-state drive (SSD) to cache in put data and localized data of MapReduce tasks. In order to make a good trade-off between cost and performance, mpCache proposes ways to dynamically allocate the cache space be-tween the input data and localized data and to do cache replacement. We have implemented mpCache in Hadoop and evaluated it on a 7-node commodity cluster by 13 benchmarks. The experimental results showthat mpCache can gain an average speedup of 2.09x when compared with Hadoop, and can achieve an average speedup of 1.79x when com-pared with PACMan, the latest in-memory optimization of MapReduce.


 


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  • Model: PROJ7560
  • 999 Units in Stock
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This product was added to our catalog on Monday 31 July, 2017.

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