openclaw - 💡(How to fix) Fix No circuit breaker when context overflow + lane timeout coincide — session becomes unrecoverable [1 comments, 2 participants]

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openclaw/openclaw#77739Fetched 2026-05-06 06:22:10
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Fix Action

Fix / Workaround

Current workaround: External watchdog scripts detect the pattern and restart the gateway.

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When a context overflow compaction attempt coincides with a lane timeout (e.g. the compaction itself times out), there is no circuit breaker to detect this coincidence and trigger emergency recovery (session rotation or fresh start).

Failure cascade:

  1. Session hits context overflow → compaction triggers
  2. Compaction model call times out (lane timeout fires at 630s hardcoded)
  3. Session is left in processing state with no recovery path
  4. Subsequent messages queue behind the dead lane indefinitely
  5. Only gateway restart recovers

What should happen: When context overflow + lane timeout fire simultaneously, the system should:

  • Detect the collision
  • Force-rotate the session (clear state, inject handoff summary)
  • Or at minimum: log a [CRITICAL] event that the watchdog can act on

Current workaround: External watchdog scripts detect the pattern and restart the gateway.

Related issues: #70334, #48488, #64962

extent analysis

TL;DR

Implement a circuit breaker to detect the coincidence of context overflow and lane timeout, triggering emergency recovery such as session rotation or logging a critical event.

Guidance

  • Identify the code path where the compaction model call times out and the lane timeout fires, to insert a detection mechanism for the coincidence.
  • Consider adding a watchdog or a similar monitoring mechanism within the system to detect and respond to the processing state with no recovery path.
  • Review related issues (#70334, #48488, #64962) for potential insights or existing solutions that could be applied to this problem.
  • Evaluate the feasibility of force-rotating the session or injecting a handoff summary when the coincidence is detected, as a more robust recovery mechanism.

Example

No specific code snippet can be provided without more context, but the solution might involve adding a conditional check for the coincidence of context overflow and lane timeout, followed by a call to a recovery function.

Notes

The current workaround relies on external watchdog scripts, which may not be ideal. A built-in solution would be more robust and reliable. The hardcoded lane timeout of 630s might also be worth reviewing for potential adjustments.

Recommendation

Apply a workaround by implementing a circuit breaker to detect the coincidence and trigger emergency recovery, as a more comprehensive solution would require significant changes to the system's architecture and error handling mechanisms.

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openclaw - 💡(How to fix) Fix No circuit breaker when context overflow + lane timeout coincide — session becomes unrecoverable [1 comments, 2 participants]