%3CLINGO-SUB%20id%3D%22lingo-sub-1223240%22%20slang%3D%22en-US%22%3EExperiencing%20Data%20Latency%20issue%20in%20East%20US%20for%20availability%20tests%20-%2003%2F11%20-%20Resolved%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1223240%22%20slang%3D%22en-US%22%3E%3CDIV%20style%3D%22font-size%3A14px%3B%22%3E%3CDIV%20style%3D%22font-size%3A14px%3B%22%3E%3CU%3EFinal%20Update%3C%2FU%3E%3A%20Thursday%2C%2012%20March%202020%2002%3A31%20UTC%3CBR%20%2F%3E%3CBR%20%2F%3EWe've%20confirmed%20that%20all%20systems%20are%20back%20to%20normal%20with%20no%20customer%20impact%20as%20of%203%2F12%2C%202%3A00%20UTC.%20Our%20logs%20show%20the%20incident%20started%20on%203%2F10%2C%2021%3A23%20UTC%20and%20that%20during%20the%20%3CSPAN%20style%3D%22color%3A%20rgb(0%2C%200%2C%200)%3B%20font-family%3A%20%26quot%3BHelvetica%20Neue%26quot%3B%2C%20Helvetica%2C%20Arial%2C%20sans-serif%3B%20font-size%3A%2014px%3B%20font-style%3A%20normal%3B%20font-variant-ligatures%3A%20normal%3B%20font-variant-caps%3A%20normal%3B%20font-weight%3A%20400%3B%20letter-spacing%3A%20normal%3B%20orphans%3A%202%3B%20text-align%3A%20start%3B%20text-indent%3A%200px%3B%20text-transform%3A%20none%3B%20white-space%3A%20normal%3B%20widows%3A%202%3B%20word-spacing%3A%200px%3B%20-webkit-text-stroke-width%3A%200px%3B%20background-color%3A%20rgb(255%2C%20255%2C%20255)%3B%20text-decoration-style%3A%20initial%3B%20text-decoration-color%3A%20initial%3B%20display%3A%20inline%20!important%3B%20float%3A%20none%3B%22%3E28%3C%2FSPAN%3E%3CDURATION%20of%3D%22%22%20incident%3D%22%22%3E%3C%2FDURATION%3Ehours%20and%2037%20minutes%20that%20it%20took%20to%20resolve%20the%20issue%20customers%20experienced%20latent%20results%20for%20availability%20tests.%3CBR%20%2F%3E%3CUL%3E%3CLI%3E%3CU%3ERoot%20Cause%3C%2FU%3E%3A%20The%20failure%20was%20due%20to%20an%20invalid%20data%20value%20introduced%20to%20the%20backend%20causing%20intermittent%20delays%20of%20test%20results%20and%20possible%20missed%20results.%3C%2FLI%3E%3CLI%3E%3CU%3EIncident%20Timeline%3C%2FU%3E%3A%2028%20Hours%20%26amp%3B%2037%20minutes%20-%203%2F10%2C%2021%3A23%20UTC%20through%203%2F12%2C%202%3A00%20UTC%3C%2FLI%3E%3C%2FUL%3EWe%20understand%20that%20customers%20rely%20on%20Application%20Insights%20as%20a%20critical%20service%20and%20apologize%20for%20any%20impact%20this%20incident%20caused.%3CBR%20%2F%3E%3CBR%20%2F%3E-Jeff%3CBR%20%2F%3E%3C%2FDIV%3E%3CHR%20style%3D%22border-top-color%3Alightgray%22%20%2F%3E%3CDIV%20style%3D%22font-size%3A14px%3B%22%3E%3CDIV%20style%3D%22font-size%3A14px%3B%22%3E%3CU%3EInitial%20Update%3C%2FU%3E%3A%20Wednesday%2C%2011%20March%202020%2020%3A14%20UTC%3CBR%20%2F%3E%3CBR%20%2F%3EWe%20are%20aware%20of%20issues%20within%20Application%20Insights%20and%20are%20actively%20investigating.%20Some%20customers%20may%20experience%20Data%20Latency%20in%20availability%20test%20results.%3CUL%3E%3CLI%3E%3CU%3ENext%20Update%3C%2FU%3E%3A%20Before%2003%2F11%2022%3A30%20UTC%3C%2FLI%3E%3C%2FUL%3EWe%20are%20working%20hard%20to%20resolve%20this%20issue%20and%20apologize%20for%20any%20inconvenience.%3CBR%20%2F%3E-Jeff%3C%2FDIV%3E%3CHR%20style%3D%22border-top-color%3Alightgray%22%20%2F%3E%3C%2FDIV%3E%3C%2FDIV%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-1223240%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EApplication%20Insights%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E
Final Update: Thursday, 12 March 2020 02:31 UTC

We've confirmed that all systems are back to normal with no customer impact as of 3/12, 2:00 UTC. Our logs show the incident started on 3/10, 21:23 UTC and that during the 28 hours and 37 minutes that it took to resolve the issue customers experienced latent results for availability tests.
  • Root Cause: The failure was due to an invalid data value introduced to the backend causing intermittent delays of test results and possible missed results.
  • Incident Timeline: 28 Hours & 37 minutes - 3/10, 21:23 UTC through 3/12, 2:00 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.

-Jeff

Initial Update: Wednesday, 11 March 2020 20:14 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers may experience Data Latency in availability test results.
  • Next Update: Before 03/11 22:30 UTC
We are working hard to resolve this issue and apologize for any inconvenience.
-Jeff