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针对农田数据在高吞吐量、高并发、多条件处理过程中易产生运算负载大、响应速度慢等难题,研究了负载均衡大规模集群数据处理技术,优化了多条件检索时Hbase农田数据库,提出了基于Solr的二级非主键索引方法,搭建了基于Hadoop的农田大数据平台,采用农机深松、植保、保护性耕作等8种作业生成的100TB数据对平台进行了检索实验和压力测试实验。实验结果表明,多条件检索时,优化后的技术模型在数据规模达到5×107条时,系统的响应时间小于1s,优化的性能与原生Hbase相比提高了3倍;在模拟用户达到5×105次时,系统的QPS及TPS提高了1倍左右、RT提高了2.5倍,系统的平均响应时间为183ms。本研究解决了高吞吐量、高并发导致农田数据检索效率低的问题,提高了海量农田数据实时处理的计算能力。 相似文献
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Livia Olsen Tara Baillargeon Harish Maringanti 《Journal Of Agricultural & Food Information》2013,14(1):35-44
This article describes the processes, challenges, and outcomes of a project undertaken by Kansas State University (K-State) Libraries and a global community of researchers. The project, initiated by librarians in the newly created Faculty and Graduate Services Department, involved collaboration with a K-State agronomist. The initial concept was to create an open access database of croplands research submitted by researchers from the Global Research Alliance Croplands Research Group, a consortium of over 30 countries. Due to the project's complexity, it was determined that a more manageable approach would be to pilot the project by including research from only the United States and Australia to resolve problems before scaling up to include all 34 countries in the GRA Croplands Research Group. 相似文献
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