Experiencing Metrics Data Latency in Azure portal – 12/08 – Resolved

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Final Update: Thursday, 09 December 2021 02:43 UTC

Summary of impact:  Between 20:24 UTC 08 Dec 2021 and 04:24 UTC 08 Dec 2021, customers using Azure Monitor may have experienced failures when attempting to see metrics. About 20% of the queries retrieving data for Azure App Services and Azure Functions may have failed. Retries may be successful.

Preliminary Root Cause: We determined that a recent upgrade to the compute tenant caused a backend component turn unhealthy leading to the query failures.

Mitigation: We throttled the query load, which brought the backend component to a healthy state to prevent further query failures and as result mitigated the issue.
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.

-Jack Cantwell

Update: Thursday, 09 December 2021 00:31 UTC

The team is still working on mitigating the issues, but customers may continue to experience failures when attempting to see metrics for Azure App Services and Azure Functions.
  • Work Around: None
  • Next Update: Before 12/09 02:00 UTC
-Jack Cantwell

Update: Wednesday, 08 December 2021 22:34 UTC

Starting at 20:24 UTC 08 Dec 2021, users of Azure Monitor who may have experienced failures when attempting to see metrics for Azure App Services and Azure Functions. About 20% of the queries retrieving data for Azure App Services and Azure Functions may have failed.

  • Work Around: none
  • Next Update: Before 12/09 00:00 UTC
-Jack Cantwell

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