Improving Compaction in LSM Trees through ZNS Simple Copy: (Extended Abstract)

Chihyun Lee, Sangeun Chae, Sungho Moon,Kyeungpyo Kim, Sungsoon Park,Beomseok Nam

2023 IEEE 12th Non-Volatile Memory Systems and Applications Symposium (NVMSA)（2023）

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摘要

In this study, we propose a novel compaction method that leverages the simple copy command of ZNS. If data blocks have little of no overlap in key range, they are directly copied to the target SSTable without reading them into the host memory, thus eliminating the need for merge sorting.

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关键词

RocksDB,Zoned Namespace SSD

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