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arXiv · 2009.11543

Compressed Key Sort and Fast Index Reconstruction

Yongsik Kwon·Cheol Ryu·Sang Kyun Cha·Arthur H. Lee·Kunsoo Park·Bongki Moon
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Abstract

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.

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Yongsik Kwon, Cheol Ryu, Sang Kyun Cha, Arthur H. Lee, Kunsoo Park, Bongki Moon. 2020-09-24. Compressed Key Sort and Fast Index Reconstruction. https://arxiv.org/abs/2009.11543

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