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docs: document EXPERIMENT_AUTO_UNLOCK_STATE_LOCK #3083

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docs: add EXPERIMENT_AUTO_UNLOCK_STATE_LOCK experiment flag
ZachGoldberg Apr 14, 2026
035a5e7
mention tg1.0 requirement
ZachGoldberg Apr 14, 2026
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17 changes: 17 additions & 0 deletions docs/2.0/reference/pipelines/feature-flags.md
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Expand Up @@ -124,6 +124,23 @@ Enables Terragrunt features to reduce the potential changes during a run-all. Te
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#### `PIPELINES_FEATURE_EXPERIMENT_AUTO_UNLOCK_STATE_LOCK`
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Enables Pipelines to automatically force-unlock a stale Terraform/OpenTofu state lock when an AWS session timeout causes the lock-release step to fail mid-apply. When detected (both `Error releasing the state lock` and `ExpiredTokenException` appear in the apply output), Pipelines runs `terragrunt plan -- -lock-timeout=0s` with fresh credentials to identify the stale lock ID, then calls `terragrunt force-unlock` to release it. The original apply error is still returned -- the unlock only clears the lock so the next run can proceed.

Requires Terragrunt 1.0 or later. Earlier versions do not produce the structured run report that this feature depends on.

Only applies to single-unit commands. Use of this feature with `run --all` is not yet supported.
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**Default Value**: Disabled
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<li>
**How to Enable**: Set to `"true"`
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</ul>

#### `PIPELINES_FEATURE_EXPERIMENT_USE_MISE_EXEC_TG_WRAPPER`
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