# Datadog: Major incident: Delayed APM metric ingestion

**Summary:** Datadog reported a major APM and process metric ingestion delay starting 2025-12-12 18:37 UTC, affecting monitor evaluation and causing some incorrect alerts. The incident was resolved at 2025-12-12 21:52 UTC after 3 h 15 min; APM impact ended, while remaining live process data impact was tracked in a separate incident. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2025-12-12 18:37 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/qwpxql6b48pl](https://stspg.io/qwpxql6b48pl)
- [Company: Datadog](https://rewindex.com/company/datadog.md)
- Versions: before (none: first archived) → after incident\_version:274/c4gh438m6pp3@493f343135a2
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Delayed APM metric ingestion
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-12-12 18:37 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-12-12 21:52 UTC
```

**6. Added: Affected components**

```diff
+ Metrics and Infra Monitoring
```

**7. Added: Update** (investigating) · 2025-12-12 18:37 UTC

```diff
+ We are currently investigating lag in ingesting apm metrics, which affects monitor evaluation.
```

**8. Added: Update** (investigating) · 2025-12-12 18:55 UTC

```diff
+ We are continuing to investigate this issue.
```

**9. Added: Update** (investigating) · 2025-12-12 19:26 UTC

```diff
+ We are currently investigating lag in ingesting apm and process metrics, which affects monitor evaluation and in some cases led to incorrect monitor alerts.
```

**10. Added: Update** (identified) · 2025-12-12 20:53 UTC

```diff
+ We have identified the issue affecting ingestion delays in apm and process metrics and are working on recovery
```

**11. Added: Update** (resolved) · 2025-12-12 21:52 UTC

```diff
+ All impact related to APM metrics has been resolved.  A separate incident has been created to track the remaining impact in live process data.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-12-12 18:37 UTC | Major incident: Delayed APM metric ingestion (this change) | degradation |

All Datadog changes: [timeline](https://rewindex.com/company/datadog/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i33e86d9b87762e · Markdown: https://rewindex.com/change/i33e86d9b87762e.md · JSON: https://rewindex.com/api/v1/changes/i33e86d9b87762e · Generated 2026-10-18T03:55:44.899Z