Update shard retry targeting to de-prioritize overloaded servers

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    • Type: Improvement
    • Resolution: Fixed
    • Priority: Major - P3
    • 8.3.0-rc0
    • Affects Version/s: None
    • Component/s: None
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    • Catalog and Routing
    • Fully Compatible
    • CAR Team 2025-09-29, CAR Team 2025-10-13, Workload Scheduling 2025-09-15
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      Update the shard retry targeting logic (e.g. RemoteCommandTargeter::findHost), used in Shard, ARS, and async_rpc, to de-prioritize servers that have previously returned SystemOverloaded errors.

      See the design for more details.

            Assignee:
            Igor Praznik
            Reporter:
            Patrick Freed
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              Created:
              Updated:
              Resolved: