Description:
Currently, challenge hosts do not have the ability to purge the submissions queue from the Manage tab in EvalAI. This feature would allow hosts to clear out pending/running submissions for their challenge when necessary (e.g., stuck jobs, debugging, challenge resets).

Proposed Solution:

• Add a "Purge Queue" button to the Manage tab UI for challenge hosts.

• Clicking this button should:

  • Prompt for confirmation (with clear warning: "This action will delete all pending submissions in the queue. This cannot be undone.").
  • On confirmation, call a backend API endpoint that purges the submissions queue for that challenge.

• Backend:

  • Implement a new endpoint (accessible only by challenge hosts/admins) that clears all pending/running submissions for the given challenge.
  • Ensure proper authorization checks to prevent misuse.

• UI/UX:

  • Place the button in the Submissions/Queue management section.
  • Provide success/error messages after action.
  • • Shows the current number of submissions in the queue

Benefits:

• Helps challenge hosts quickly resolve issues like stuck queues.
• Reduces dependency on super-admins for manual purges.
• Improves host autonomy in managing their challenges.