fix(worker): retry heartbeat if JobDocument is not yet available #3205
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Fixes huggingface#2532 When a worker sends a heartbeat immediately after job assignment, it may race with job persistence, resulting in: `JobDocument matching query does not exist`. This patch adds retry logic to the `WorkerExecutor.heartbeat()` method in `executor.py`, retrying the heartbeat a few times (with delay) if this specific error occurs. This avoids false negatives and unnecessary worker shutdowns on transient states. Retries: 6 attempts Delay: 0.5s between retries Only the specific "JobDocument not found" error is retried — other exceptions still raise immediately.
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Fixes #2532
Adds a retry loop in
WorkerExecutor.heartbeat()to handle the case where the heartbeat is sent before the JobDocument has been persisted."JobDocument matching query does not exist"is detected