In productionProbeginnerMission idempotency
A restart repeats the delivery
Resume after a controller restart without delivering the same payload twice.
Pairs with Missions, docking, and operations in Nav2 Incident Response. Read the concept first, then diagnose it here.
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The robot completed handoff, restarted, and executes the handoff action again.
Ubuntu 24.04, ROS 2 Jazzy, Nav2, Gazebo Harmonic, warehouse mission simulator
System boundary
Trace only the relevant path.
handoff actionmission checkpointtask resume
How this lab works
You diagnose it — no command list.
Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you — finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.
Verification
Your repair must pass more than the visible symptom.
- Restart resumes next phase
- Handoff occurs once
- Hidden regression behavior
- Root cause explanation