A review of adaptive approaches to MapReduce scheduling in heterogeneous environments

MapReduce is currently a significant model for distributed processing of large-scale data intensive applications. MapReduce default scheduler is limited by the assumption that nodes of the cluster are homogeneous and that tasks progress linearly. This model of MapReduce scheduler is used to decide speculatively re-execution of straggler tasks. The assumption of homogeneity does not always hold in practice. MapReduce does not fundamentally consider heterogeneity of nodes in computer clusters. It is evident that total job execution time is extended by the straggler tasks in heterogeneous environments. Adaptation to Heterogeneous environment depends on computation and communication, architectures, memory and power. In this paper, first we explain about existing scheduling algorithms and their respective characteristics. Then we review some of the approaches of scheduling algorithms like LATE, SAMR and ESAMR, which have been aimed specifically to make the performance of MapReduce adaptive in heterogeneous environments. Additionally, we have also introduced a novel approach for scheduling processes for MapReduce scheduling in heterogeneous environments that is adaptive and thus learns from past execution performances.