NDLI: Towards execution guarantees for stream queries

Content Provider	IEEE Xplore Digital Library
Author	Fernandez-Moctezuma, R.J. Maier, D. Tufte, K.A.
Copyright Year	2010
Description	Author affiliation: Department of Computer Science, Portland State University, 1900 SW 4th Ave., OR 97207, USA (Fernandez-Moctezuma, R.J.; Maier, D.; Tufte, K.A.)
Abstract	The unbounded nature of data streams and the low-latency requirements of stream processing present interesting challenges in Data Stream Management System (DSMS) design. Streaming query operators are typically designed to produce results with low latency, as well as to efficiently manage their state. Stream-progress delimitation techniques, such as punctuation, can help query operators achieve these goals. In this work, we look at deriving execution guarantees with respect to result production and state management for complete queries over punctuated streams. These guarantees are derived before query execution. We formalize notions of successful stream processing at an operator level, and extend these definitions to stream queries as a whole. We introduce a framework, punctuation contracts, for analyzing data processing and punctuation propagation from input to output on individual operators. We then use our framework to analyze complete queries and determine, prior to execution, if every valid input is eventually emitted, and no item remains in operator state indefinitely. Finally, we discuss extensions needed to bound query memory requirements; we describe four stream properties that can be used to help understand and quantify memory and CPU usage.
Starting Page	1
Ending Page	8
File Size	257518
Page Count	8
File Format	PDF
ISBN	9781424465330
e-ISBN	9781424465347
DOI	10.1109/IPDPSW.2010.5470850
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer science Data analysis Query processing Production Telephony Data processing Central Processing Unit Pattern analysis Delay Contracts
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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