iQCAR
| Autor: | Sudeepa Roy, Harrison Lundberg, Prajakta Kalmegh, Frederick Xu, Shivnath Babu |
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| Rok vydání: | 2018 |
| Předmět: |
Spectrum analyzer
Computer science Interface (Java) Distributed computing Rank (computer programming) 020206 networking & telecommunications 02 engineering and technology Cluster (spacecraft) Directed acyclic graph Article Set (abstract data type) Resource (project management) 020204 information systems Computer cluster 0202 electrical engineering electronic engineering information engineering |
| Zdroj: | SIGMOD Conference |
| DOI: | 10.1145/3183713.3193567 |
| Popis: | Unpredictability in query runtimes can arise in a shared cluster as a result of resource contentions caused by inter-query interactions. iQCAR - inter Query Contention AnalyzeR is a system that formally models these interferences between concurrent queries and provides a framework to attribute blame for contentions. iQCAR leverages a multi-level directed acyclic graph called iQCAR-Graph to diagnose the aberrations in query schedules that lead to these resource contentions. The demonstration will enable users to perform a step-wise deep exploration of such resource contentions faced by a query at various stages of its execution. The interface will allow users to identify top-k victims and sources of contentions, diagnose high-contention nodes and resources in the cluster, and rank their impacts on the performance of a query. Users will also be able to navigate through a set of rules recommended by iQCAR to compare how application of each rule by the cluster scheduler resolves the contentions in subsequent executions. |
| Databáze: | OpenAIRE |
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