website/www/site/content/en/contribute/precommit-policies.md

---
title: "Pre-commit Test Policies"
---
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# Pre-commit test policies

## Definitions

- Pre-commit test - Any single test in a pre-commit test suite.
- Pre-commit test suite - A collection of pre-commit tests that have a common
  denominator. A test suite runs in a single Jenkins job. Currently, suites are
  grouped by SDK languages, e.g., Python, Java, and Go.

## Policies

### Pull Requests

- A PR must pass pre-commit tests before being committed to the main Beam repo.
  - The relevant pre-commit test suites are automatically launched according to
    PR contents.

### Problems

#### Breakage

Breakage is when one or more tests in a pre-commit test suite fails or
is flaky (occasionally fails).

- Breakages should be fixed within 8 hours.

#### Slowness

Slowness is when the total time to run a pre-commit suite exceeds 30 minutes\*,
including the time the job spends in the Jenkins queue.

- Slowness should be fixed within 24 hours.

\* See the [Pre-commit Slowness Triage
Guide](/contribute/precommit-triage-guide/) for a precise definition of slowness
and for information on dealing with slowness.

### Problem Resolution

For any problem, the options are, one of:

- Roll back the culprit PR.
- Roll out a fix within 24 hours.
- Disable the slow test or feature temporarily (make sure there's a tracking
  issue to re-enable it).