# Matillion: Major incident: Pipeline: : Instability in Pipeline Execution Steps

**Summary:** Matillion reported major instability in Pipeline Execution affecting the EU and US regions, starting at 2026-04-21 10:51 UTC and resolved at 2026-04-21 11:20 UTC, lasting 29 min. A fix was implemented and monitored before resolution; no cause was stated. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-04-21 10:51 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/nwkp9yfyxs33](https://stspg.io/nwkp9yfyxs33)
- [Company: Matillion](https://rewindex.com/company/matillion.md)
- Versions: before (none: first archived) → after incident\_version:151/rhl3xb184vyz@69f3721ae422
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Pipeline: : Instability in Pipeline Execution Steps
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-04-21 10:51 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-04-21 11:20 UTC
```

**6. Added: Affected components**

```diff
+ EU Region - Pipeline Execution, Pipeline Execution, US Region - Pipeline Execution
```

**7. Added: Update** (investigating) · 2026-04-21 10:51 UTC

```diff
+ We are currently investigating this issue
```

**8. Added: Update** (investigating) · 2026-04-21 10:52 UTC

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

**9. Added: Update** (investigating) · 2026-04-21 10:54 UTC

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

**10. Added: Update** (investigating) · 2026-04-21 10:55 UTC

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

**11. Added: Update** (identified) · 2026-04-21 11:04 UTC

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

**12. Added: Update** (monitoring) · 2026-04-21 11:15 UTC

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

**13. Added: Update** (resolved) · 2026-04-21 11:20 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-04-21 10:51 UTC | Major incident: Pipeline: : Instability in Pipeline Execution Steps (this change) | degradation |

All Matillion changes: [timeline](https://rewindex.com/company/matillion/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/i4366a98f5b23c3 · Markdown: https://rewindex.com/change/i4366a98f5b23c3.md · JSON: https://rewindex.com/api/v1/changes/i4366a98f5b23c3 · Generated 2026-10-18T02:55:00.208Z