Self-Adjusting Slot Configurations for Homogeneous and Heterogeneous Hadoop Clusters
Product Description
Self-Adjusting Slot Configurations for
Homogeneous and Heterogeneous Hadoop
Clusters
Abstract— Self-Adjusting Slot Configurations for Homogeneous and Heterogeneous Hadoop Clusters. The MapReduce framework and its open source implementation Hadoop have become the defacto platform for scalable analysis on large data sets in recent years. One of the primary concerns in Hadoop is how to minimize the completion length < Final Year Projects 2016 > i.e., makespan of a set of MapReduce jobs. The current Hadoop only allows static slot configuration, i.e., fixed numbers of map slots and reduce slots throughout the lifetime of a cluster. However, we found that such a static configuration may lead to low system resource utilizations as well as long completion length. Motivated by this, we propose simple yet effective schemes which useslot ratio between map and reduce tasks as a tunable knob for reducing the makespan of a given set. By leveraging the workload information of recently completed jobs, our schemes dynamically allocates resources (or slots) to map and reduce tasks. We implemented the presented schemes in Hadoop V0.20.2 and evaluated them with representative MapReduce benchmarks at Amazon EC2. The experimental results demonstrate the effectiveness and robustness of our schemes under both simple workloads and more complex
mixed workloads.
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