Please use this identifier to cite or link to this item: https://doi.org/10.1145/1989323.1989424
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dc.titleLlama: Leveraging columnar storage for scalable join processing in the MapReduce framework
dc.contributor.authorLin, Y.
dc.contributor.authorAgrawal, D.
dc.contributor.authorChen, C.
dc.contributor.authorOoi, B.C.
dc.contributor.authorWu, S.
dc.date.accessioned2013-07-04T08:06:59Z
dc.date.available2013-07-04T08:06:59Z
dc.date.issued2011
dc.identifier.citationLin, Y.,Agrawal, D.,Chen, C.,Ooi, B.C.,Wu, S. (2011). Llama: Leveraging columnar storage for scalable join processing in the MapReduce framework. Proceedings of the ACM SIGMOD International Conference on Management of Data : 961-972. ScholarBank@NUS Repository. <a href="https://doi.org/10.1145/1989323.1989424" target="_blank">https://doi.org/10.1145/1989323.1989424</a>
dc.identifier.isbn9781450306614
dc.identifier.issn07308078
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/40553
dc.description.abstractTo achieve high reliability and scalability, most large-scale data warehouse systems have adopted the cluster-based architecture. In this paper, we propose the design of a new cluster-based data warehouse system, LLama, a hybrid data management system which combines the features of row-wise and column-wise database systems. In Llama, columns are formed into correlation groups to provide the basis for the vertical partitioning of tables. Llama employs a distributed file system (DFS) to disseminate data among cluster nodes. Above the DFS, a MapReduce-based query engine is supported. We design a new join algorithm to facilitate fast join processing. We present a performance study on TPC-H dataset and compare Llama with Hive, a data warehouse infrastructure built on top of Hadoop. The experiment is conducted on EC2. The results show that Llama has an excellent load performance and its query performance is significantly better than the traditional MapReduce framework based on row-wise storage. © 2011 ACM.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1145/1989323.1989424
dc.sourceScopus
dc.subjectcolumn store
dc.subjectjoin
dc.subjectMapReduce
dc.typeConference Paper
dc.contributor.departmentCOMPUTER SCIENCE
dc.description.doi10.1145/1989323.1989424
dc.description.sourcetitleProceedings of the ACM SIGMOD International Conference on Management of Data
dc.description.page961-972
dc.identifier.isiutNOT_IN_WOS
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