Turnitin Incident - Unexpected Service Degradation - 26 October 2022
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Updated
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AppsAnywhere service has now been restored, with DS&S continuing to monitor the service throughout the day. We apologise for any inconvenience that this issue had caused, and appreciate your patience whilst this was being investigated.
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Scheduled
MyHub will be unavailable on Monday 17 October between 6.30pm and 11.00pm.
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System updated
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Maintenance complete. No issues reported.
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Current Status: Operational
Affected Infrastructure
Components: Website, Video playback, Search, Recording / Uploading, Processing / Encoding, Integrations
Locations: Europe (EU)
Update:
On 2022-10-10 between 09:09 UTC and 10:37 UTC, the Panopto EU cloud experienced increased error rates and latency resulting in general website instability. During this time period, users may not have been able to perform operations such as logging in or editing content and there may have been a delay in new or updated content appearing in search results.
RCA: Due to a usage pattern change, a frequently used database query began to use a suboptimal execution plan. This new execution plan caused excessive resource utilization, resulting in increased error rates as other queries were delayed and timed out. The Panopto operations team responded by removing the execution plan, which resolved the issue. Additionally, the time to resolution was delayed due to a gap in our escalation process that has since been closed.
To prevent a recurrence of this issue, our engineering team has optimized the query to ensure better-performing execution plans are used.
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Scheduled
MyHub will be unavailable on Saturday 22 October between 12.00am and 12.00pm.
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Scheduled
MyHub will be unavailable between 6.00pm on Friday 14 October and 9.00am on Monday 17 October 2022.
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Resolved
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Scheduled
Academic Workload Planning System (AWPS) will be unavailable between 7pm on Tuesday 4 October and 7am on Wednesday 5 October.
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