stanfordnlp/dspy

[Bug] ParallelEvaluate `causes cannot schedule new futures after shutdown on long evals`

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#9,574 opened on Apr 7, 2026

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Description

dspy.Evaluate doesn't expose timeout. ParallelExecutor's 120s straggler timeout causes cannot schedule new futures after shutdown on long evals.

source: https://x.com/kargarisaac/status/2041596855172424159

Contributor guide

Research direction
Examine the dspy.Evaluate class to add a timeout parameter and adjust ParallelExecutor shutdown to avoid 'cannot schedule new futures after shutdown'.
Tech stack
python
Domain
backendmachine learning
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Python
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70