Experiencing Data Latency for Many Data Types – 12/17 – Resolved


Final Update: Thursday, 17 December 2015 21:55 UTC

We’ve confirmed that all
systems are back to normal with no customer impact as of 12/17, 21:30 UTC. Our
logs show the incident started on 12/17, 17:15 UTC and that during the 4
hours that it took to resolve the issue less than 2% of customers experienced
data latency over 2 hours.

  • Root Cause: We are still working to determine the exact root cause.
  • Lessons Learned: Pending on RCA. Additional telemetry will be collected to understand this issue further.
  • Incident Timeline: 4 Hours & 15 minutes – 12/17, 17:15 UTC through 12/17, 21:30 UTC.

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

-Application Insights Service Delivery Team


Update: Thursday, 17 December 2015 19:31 UTC

Root cause has been isolated to slow data processing which was impacting one of the processing centers. Processing service is now working as expected. Some customers may experience data gap for many data types and we estimate 2-3 hours before all missing data is processed. Customers will be able to access/view current telemetry data.
  • Work Around: Current data is not affected
  • Next Update: Before 12/17 22:00 UTC

-Application Insights Service Delivery Team


Initial Update: Thursday, 17 December 2015 17:31 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Latency. The following data types are affected: Customer Event,Metric,Page Load,Page View,Performance Counter,Request.
  • Work Around: None
  • Next Update: Before 12/17 20:00 UTC

We are working hard to resolve this issue and apologize for any inconvenience.
-Application Insights Service Delivery Team


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