Experiencing Data Access Issue in Azure Portal for Application Analytics – 08/12 – Resolved


Final Update: Friday, 12 August 2016 22:23 UTC

We've confirmed that all systems are back to normal with no customer impact as of 8/12, 21:27 UTC. Our logs show the incident started on 8/11, 22:06 UTC and that during the 23 hours it took to resolve the issue, a small number of customers may have noticed missing autocomplete for IntelliSense while creating or modifying queries in the Application Analytics portal.  Saved queries and users who do not rely on autocomplete were not affected and would not have seen the issue.
  • Root Cause: The failure was due to a code bug that returned an empty data schema which caused the IntelliSense to be unable to enumerate the proper values so that autocomplete no longer worked.
  • Lessons Learned: We have identified the code responsible for the issue and have deployed a permanent fix.  We are also investigating telemetry and monitoring improvements that would catch this kind of issue.
  • Incident Timeline: 23 Hours & 21 minutes - 8/11, 22:06 UTC through 8/12, 21:27 UTC

We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.

-Matt


Update: Friday, 12 August 2016 21:06 UTC

Root cause has been isolated to a code bug which was causing a schema query to return zero rows. To address this issue we have created and verified a hotfix in our non-production environments. Deployments to the production environments are under way, but may take several hours to complete.
  • Work Around: Existing queries are unaffected, and customers who do not rely on autocomplete to create queries are also unaffected.
  • Next Update: Before 08/13 01:30 UTC

-Matt


Initial Update: Friday, 12 August 2016 18:53 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers may experience issues with autocomplete when creating queries in the Application Analytics portal.  We have identified the root cause of the issue and are preparing a hotfix to deploy.
  • Work Around: Existing queries are unaffected, and customers who do not rely on autocomplete to create queries are also unaffected.
  • Next Update: Before 08/12 21:00 UTC

We are working hard to resolve this issue and apologize for any inconvenience.
-Matt


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