Unverified50% confidenceSolutionExact time
A more robust design requires multiple safeguards: lease + fencing token + checkpoint version + idempotent writes, along with monitoring lease renewal latency and issuing advance alerts for Workers nearing expiration; when a Worker's state cannot be determined, it is better to conservatively wait longer than to take over rashly.
1
Sources
50%
Confidence
Long-term
Relevance
10/27/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedLease expiration does not mean the worker is actually dead: GC pauses, network partitions, and event loop blocking can all temporarily disconnect a healthy worker, and leases alone cannot solve the problem of stale checkpoint writes.68% similarUnverifiedClaiming a lease cannot eliminate the cost of crashes: if a worker that died halfway through a run has not yet written its completed steps to the run row, the worker that takes over will run them again; a worker that is still alive but evicted will stop between steps, so the step being executed at that moment may still complete.63% similar
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