Cloud services are important for healthcare, banking, communication, and other purposes. Inevitably, such services fail, harming the processes and disturbing the people that depend on them. Understanding failure in cloud services is challenging, but important to help preventing them. Much work has studied failure logs and reports provided by infrastructure operators. However, there is a paucity of information about how users perceive the failures of cloud services. In this work, we collect user-reported failures and characterize them empirically. We collect failures reported by users to the trusted aggregator Outage Report for 12 cloud services over 16 months spread across 2019 and 2020. We show evidence that user-reported failures not only capture major failures also self-reported by cloud operators, but also provide information about additional failures. We count and analyze time patterns in these reports. We make 6 main observations about how users perceive failure in cloud services. We find over 10x differences in request failure rates across microservice structures when using user reported traces compared to using a constant failure distribution. Overall, our study provides the first long-term characterization of user-reported cloud failures.
|Title of host publication||2021 IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS)|
|Subtitle of host publication||[Proceedings]|
|Editors||Esam El-Araby, Vana Kalogeraki, Danilo Pianini, Frederic Lassabe, Barry Porter, Sona Ghahremani, Ingrid Nunes, Mohamed Bakhouya, Sven Tomforde|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|Publication status||Published - 5 Jan 2022|
|Event||2nd IEEE International Conference on Autonomic Computing and Self-Organizing Systems, ACSOS 2021 - Virtual, Online, United States|
Duration: 27 Sept 2021 → 1 Oct 2021
|Conference||2nd IEEE International Conference on Autonomic Computing and Self-Organizing Systems, ACSOS 2021|
|Period||27/09/21 → 1/10/21|
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