Experiencing ingestion latency and data gaps for Log Analytics - 12/16 - Resolved
Published Dec 15 2021 09:24 PM 1,225 Views
Final Update: Thursday, 16 December 2021 06:01 UTC

We've confirmed that all systems are back to normal with no customer impact as of 12/16, 05:50 UTC. Our logs show the incident started on 12/16, 1:32 UTC and that during the 4 hours & 18 minutes that it took to resolve the issue some customers using Azure Log Analytics and/or Sentinel may have experienced ingestion latency and data gaps and incorrect alert activation in multiple regions ( West US, West US2, South East Asia, East US, East US2, Japan East, West Europe, Central US). 
Root Cause: The failure was due to one of our dependent service.
Incident Timeline: 4 Hours & 18 minutes - 12/16, 1:32 UTC through 12/16, 05:50 UTC
We understand that customers rely on Azure Log Analytics as a critical service and apologize for any impact this incident caused.

-Srikanth

Initial Update: Thursday, 16 December 2021 05:16 UTC

We are aware of issues within Log Analytics and are actively investigating. Some customers may experience ingestion latency and data gaps and incorrect alert activation in multiple regions. 
  • Work Around: None
  • Next Update: Before 12/16 08:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience.
-Anmol

Version history
Last update:
‎Dec 15 2021 10:19 PM
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