压缩键排序和快速索引重构
Compressed Key Sort and Fast Index Reconstruction
摘要:
在本文中,我们提出了一个索引键压缩方案的基础上的概念,区别位的索引键的区别位是足够的信息,以确定正确的排序顺序的索引键。虽然实际的压缩比可能会因数据集的特性而异(在我们的实验中观察到的平均压缩比为2.76比1),但索引键压缩方案在重建大规模索引时会显着提高性能。我们的索引键压缩可以有效地用于数据库复制和索引恢复现代内存数据库系统。
英文摘要:
In this paper we propose an index key compression scheme based on the notion of distinction bits by proving that the distinction bits of index keys are sufficient information to determine the sorted order of the index keys correctly. While the actual compression ratio may vary depending on the characteristics of datasets (an average of 2.76 to one compression ratio was observed in our experiments), the index key compression scheme leads to significant performance improvements during the reconstruction of large-scale indexes. Our index key compression can be effectively used in database replication and index recovery of modern main-memory database systems.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。