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dCompaction: Speeding up Compaction of the LSM-Tree via Delayed Compaction

文献类型：期刊论文

作者Pan, Feng-Feng2,3; Yue, Yin-Liang1; Xiong, Jin2,3
刊名JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
出版日期2017
卷号32期号:1页码:41-54
关键词key-value store Log-Structured Merge-tree (LSM-tree) write amplification delayed compaction
ISSN号1000-9000
DOI10.1007/s11390-017-1704-4
英文摘要Key-value (KV) stores have become a backbone of large-scale applications in today's data centers. Writeoptimized data structures like the Log-Structured Merge-tree (LSM-tree) and their variants are widely used in KV storage systems like BigTable and RocksDB. Conventional LSM-tree organizes KV items into multiple, successively larger components, and uses compaction to push KV items from one smaller component to another adjacent larger component until the KV items reach the largest component. Unfortunately, current compaction scheme incurs significant write amplification due to repeated KV item reads and writes, and then results in poor throughput. We propose a new compaction scheme, delayed compaction (dCompaction) that decreases write amplification. dCompaction postpones some compactions and gathers them into the following compaction. In this way, it avoids KV item reads and writes during compaction, and consequently improves the throughput of LSM-tree based KV stores. We implement dCompaction on RocksDB, and conduct extensive experiments. Validation using YCSB framework shows that compared with RocksDB, dCompaction has about 40% write performance improvements and also comparable read performance.
资助项目National Key Research and Development Program of China[2016YFB1000202] ; National Natural Science Foundation of China[61303056] ; National Natural Science Foundation of China[61379042]
WOS研究方向Computer Science
语种英语
WOS记录号WOS:000392106200005
出版者SCIENCE PRESS
源URL[http://119.78.100.204/handle/2XEOYT63/7666]  
专题中国科学院计算技术研究所期刊论文_英文
通讯作者Pan, Feng-Feng
作者单位1.Chinese Acad Sci, Inst Informat Engn, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Comp Technol, State Key Lab Comp Architecture, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Pan, Feng-Feng,Yue, Yin-Liang,Xiong, Jin. dCompaction: Speeding up Compaction of the LSM-Tree via Delayed Compaction[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2017,32(1):41-54.
APA Pan, Feng-Feng,Yue, Yin-Liang,&Xiong, Jin.(2017).dCompaction: Speeding up Compaction of the LSM-Tree via Delayed Compaction.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,32(1),41-54.
MLA Pan, Feng-Feng,et al."dCompaction: Speeding up Compaction of the LSM-Tree via Delayed Compaction".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 32.1(2017):41-54.

入库方式： OAI收割

来源：计算技术研究所

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