Answer
Each cycle locks a Pod; schedulers rely on leader election or partitioning to avoid double-binding.
Quick Answer
Each scheduler instance runs a scheduling cycle: claim a Pod to schedule, find a node, then bind it. Without locking, two scheduler instances could both select the same node for the same Pod. Kubernetes uses optimistic binding — the scheduler writes the binding to the API server which validates against resourceVersion. Only one binding succeeds; the other is rejected and retried.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ