Ankur Agiwal
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Napa: Powering Scalable Data Warehousing with Robust Query Performance at Google
Kevin Lai
Indrajit Roy
Min Chen
Jim Chen
Ming Dai
Thanh Do
Haoyu Gao
Haoyan Geng
Raman Grover
Bo Huang
Yanlai Huang
Adam Li
Jianyi Liang
Tao Lin
Li Liu
Yao Liu
Xi Mao
Maya Meng
Prashant Mishra
Jay Patel
Vijayshankar Raman
Sourashis Roy
Mayank Singh Shishodia
Tianhang Sun
Justin Tang
Junichi Tatemura
Sagar Trehan
Ramkumar Vadali
Prasanna Venkatasubramanian
Joey Zhang
Kefei Zhang
Yupu Zhang
Zeleng Zhuang
Divyakanth Agrawal
Jeff Naughton
Sujata Sunil Kosalge
Hakan Hacıgümüş
Proceedings of the VLDB Endowment (PVLDB), 14 (12) (2021), pp. 2986-2998
Preview abstract
There are numerous Google services that continuously generate vast amounts of log data that are used to provide valuable insights to internal and external business users. We need to store and serve these planet-scale data sets under extremely demanding requirements of scalability, sub-second query response times, availability even in the case of entire data center failures, strong consistency guarantees, ingesting a massive stream of updates coming from the applications used around the globe. We have developed and deployed in production an analytical data management system, called Napa, to meet these requirements. Napa is the backend for multiple internal and external clients in Google so there is a strong expectation of variance-free robust query performance. At its core, Napa’s principal technologies for robust query performance include the aggressive use of materialized views that are maintained consistently as new data is ingested across multiple data centers. Our clients also demand flexibility in being able to adjust their query performance, data freshness, and costs to suit their unique needs. Robust query processing and flexible configuration of client databases are the hallmark of Napa design. Most of the related work in this area takes advantage of full flexibility to design the whole system without the need to support a diverse set of preexisting use cases, whereas Napa needs to deal with the hard constraints of applications that differ on which characteristics of the system are most important to optimize. Those constraints led us to make particular design decisions and also devise new techniques to meet the challenges. In this paper, we share our experiences in designing, implementing, deploying, and running Napa in production with some of Google’s most demanding applications.
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Mesa: Geo-Replicated, Near Real-Time, Scalable Data Warehousing
Fan Yang
Jason Govig
Adam Kirsch
Kelvin Chan
Kevin Lai
Shuo Wu
Sandeep Dhoot
Abhilash Kumar
Mingsheng Hong
Jamie Cameron
Masood Siddiqi
David Jones
Andrey Gubarev
Shivakumar Venkataraman
Divyakant Agrawal
VLDB (2014)
Preview abstract
Mesa is a highly scalable analytic data warehousing system that stores critical measurement data related to Google's Internet advertising business. Mesa is designed to satisfy a complex and challenging set of user and systems requirements, including near real-time data ingestion and queryability, as well as high availability, reliability, fault tolerance, and scalability for large data and query volumes. Specifically, Mesa handles petabytes of data, processes millions of row updates per second, and serves billions of queries that fetch trillions of rows per day. Mesa is geo-replicated across multiple datacenters and provides consistent and repeatable query answers at low latency, even when an entire datacenter fails. This paper presents the Mesa system and reports the performance and scale that it achieves.
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