Can I read Guided Automated Learning for query workload re-Optimization on EtoBox?

Guided Automated Learning for query workload re-Optimization by Damasio, Guilherme; Corvinelli, Vincent; Godfrey, Parke; Mierzejewski, Piotr; Mihaylov, Alexandar; Szlichta, Jaroslaw; Zuzarte, Calisto is a scholarly article available to read on EtoBox.

What is Guided Automated Learning for query workload re-Optimization about?

Query optimization is a hallmark of database systems enabling complex SQL queries of today's applications to be run efficiently. The query optimizer often fails to find the best plan, when logical subtleties in business queries and schemas circumvent it. When a query runs more expensively than is viable or warranted, determination of the performance issues is usually performed manually in consultation with experts through the analysis of query's execution plan (QEP). However, this is an excessively time consuming, human error-prone, and costly process. GALO is a novel system that automates this process. The tool automatically learns recurring problem patterns in query plans over workloads in an offline learning phase, to build a knowledge base of plan-rewrite remedies. It then uses the knowledge base online to re-optimize queries queued for execution to improve performance, often quite drastically. GALO's knowledge base is built on RDF and SPARQL, W3C graph database standards, which is well suited for manipulating and querying over SQL query plans, which are graphs themselves. GALO acts as a third-tier of re-optimization, after query rewrite and cost-based optimization, as a query

Author

Damasio, Guilherme; Corvinelli, Vincent; Godfrey, Parke; Mierzejewski, Piotr; Mihaylov, Alexandar; Szlichta, Jaroslaw; Zuzarte, Calisto

Published

2019

Language

EN