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Harness: Slowness in Prod1 and Prod2 environment

MinorStatus: postmortemStarted Resolved (6.6 h)10 updatesstspg.io (opens in new tab)

Affected components: PlatformProd 2 - PlatformProd 2 - Software Engineering Insights (SEI) / AI DLC InsightsSoftware Engineering Insights (SEI) / AI DLC InsightsCode RepositoryProd 2 - Code RepositoryCustom DashboardsProd 2 - Custom DashboardsFMEProd 1 - FMEContinuous Integration Enterprise(CIE) - Self Hosted RunnersProd 2 - Continuous Integration Enterprise(CIE) - Self Hosted RunnersFMEProd 2 - FMEInfrastructure as Code Management (IaCM)Prod 2 - Infrastructure as Code Management (IaCM)Cloud Cost Management (CCM)Prod 2 - Cloud Cost Management (CCM)Feature Flags (FF)Prod 1 - Feature Flags (FF)Chaos EngineeringProd 2 - Chaos EngineeringFeature Flags (FF)Prod 2 - Feature Flags (FF)Continuous Integration Enterprise(CIE) - Windows Cloud BuildsProd 2 - Continuous Integration Enterprise(CIE) - Windows Cloud BuildsAI Test AutomationProd 2 - AI Test AutomationCloud Cost Management (CCM)Prod 1 - Cloud Cost Management (CCM)Artifact RegistryProd 2 - Artifact RegistryContinuous Delivery - Next Generation (CDNG)Prod 2 - Continuous Delivery - Next Generation (CDNG)Prod 2 - Service Reliability Management (SRM)Service Reliability Management (SRM)Continuous Integration Enterprise(CIE) - Mac Cloud BuildsProd 2 - Continuous Integration Enterprise(CIE) - Mac Cloud BuildsContinuous Delivery (CD) - FirstGen - EOSProd 1 - Continuous Delivery (CD) - FirstGen - EOSProd 2 - Security Testing Orchestration (STO)Security Testing Orchestration (STO)Continuous Integration Enterprise(CIE) - Linux Cloud BuildsProd 2 - Continuous Integration Enterprise(CIE) - Linux Cloud BuildsContinuous Delivery (CD) - FirstGen - EOSProd 2 - Continuous Delivery (CD) - FirstGen - EOSInternal Developer Portal (IDP)Prod 2 - Internal Developer Portal (IDP)Continuous Error Tracking (CET)Prod 2 - Continuous Error Tracking (CET)Prod 2 - Software Supply Chain Assurance (SSCA)Software Supply Chain Assurance (SSCA)Continuous Error Tracking (CET)Prod 1 - Continuous Error Tracking (CET)Continuous Delivery - Next Generation (CDNG)Prod 1 - Continuous Delivery - Next Generation (CDNG)Chaos EngineeringProd 1 - Chaos Engineering

Timeline of updates

  1. investigating

    We are currently investigating this issue.

  2. investigating

    We are continuing to investigate this issue.

  3. investigating

    We are continuing to investigate the issue.

  4. investigating

    We are continuing to investigate this issue.

  5. identified

    The issue has been identified and a fix is being implemented.

  6. identified

    We are continuing to work on a fix for this issue.

  7. monitoring

    A fix has been implemented and we are monitoring the results.

  8. monitoring

    A fix has been implemented and we are monitoring the results.

  9. resolved

    This incident has been resolved.

  10. postmortem

    ### Summary On September 8, 2026, customers in Prod 1 and Prod 2 experienced elevated platform latency and pipeline failures. The issue was caused by a regression in a newly released capability that triggered cascading failures under high load. Because the capability was behind a feature flag, it was quickly disabled, and service was restored after a brief monitoring period.  ### Customer Impact * Customers encountered slowness and failures during pipeline execution and UI operations. Some API calls returned errors or timed out. * No data loss or corruption occurred. ### Root Cause The new capability introduced a regression that created contention on a shared backend resource used by multiple Harness components. This saturated the shared platform infrastructure and caused the cascading failures. ### Mitigation * Disabled the capability across all environments * Temporarily increased platform capacity to restore stability ### Next Steps To prevent recurrence, Harness will: 1. **Permanently fix the capability** by profiling and eliminating the sub-optimal code path and query 2. **Improve detection** by enhancing alerting for resource-intensive queries on high-frequency platform paths

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).

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