> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trunk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Merge Queue: Skip Redundant Bisection Tests

> Bisection now skips combinations of PRs that already failed and re-splits them right away, saving CI runs and time.

**Find the PR that broke a batch faster, with fewer CI runs.**

With **Skip Redundant Bisection Tests** enabled, Trunk won't re-test a set of PRs that already failed in the same bisection. It reuses that failure instead.

* **Immediate re-splits.** Skipped groups are split and re-tested right away, alongside the rest of the bisection, instead of waiting on the tests ahead of them.
* **Only failures are reused.** A cached result never marks a PR as passed. Trunk discards a reused failure if the base changes or the bisection restarts.
* **Opt-in.** Turn it on in your queue's **Settings** under **Batching**, through the [API](/merge-queue/reference/api-v2/mergequeues/update-a-merge-queues-configuration), or with [Terraform](/merge-queue/administration/terraform).

If your queue sees many flaky failures, pair this with [Anti-flake protection](/merge-queue/optimizations/anti-flake-protection). See [Test caching during bisection](/merge-queue/optimizations/batching#test-caching-during-bisection) for details.