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  1. Two source clusters hash to the same 32-bit region. Unlikely
  2. Both clusters have an active producer with the same local PID.

When the collision The probability of a collision is negligible, but when it happens, we propose a resolution strategy to resolve it.   We introduce the sourceClusterId optional field in ProducerSnapshot.json schema, bumping the version to 2. The sourceClusterId will be set only for mirrored PIDs, null for local producers.

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