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- W3216464615 abstract "In the last decade, document store database systems have gained more traction for storing and querying large volumes of semi-structured data. However, the flexibility of the document stores' data models has limited their ability to store data in a column-major layout --- making them less performant for analytical workloads than column store relational databases. In this paper, we propose several techniques based on piggy-backing on Log-Structured Merge (LSM) tree events and tailored to document stores to store data in a columnar layout. We first extend the Dremel format, a popular on-disk columnar format for semi-structured data, to comply with document stores' flexible data model. We then introduce a new columnar layout for organizing and storing data in LSM-based storage. We also highlight the potential of using query compilation techniques for document stores, where values' types are known only at runtime. We have implemented and evaluated our techniques to measure their impact on storage, data ingestion, and query performance in Apache AsterixDB. Our experiments show significant performance gains, improving the query execution time by orders of magnitude while minimally impacting ingestion performance." @default.
- W3216464615 created "2021-12-06" @default.
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- W3216464615 date "2022-06-01" @default.
- W3216464615 modified "2023-10-16" @default.
- W3216464615 title "Columnar formats for schemaless LSM-based document stores" @default.
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- W3216464615 doi "https://doi.org/10.14778/3547305.3547314" @default.
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