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Add note to A27 about not supporting endpoint-level weights. #186

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markdroth merged 1 commit into from
Jun 15, 2020
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Add note to A27 about not supporting endpoint-level weights. #186

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5 changes: 5 additions & 0 deletions A27-xds-global-load-balancing.md
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Expand Up @@ -234,6 +234,10 @@ policy will be responsible for both selecting the highest priority set
of localities that are reachable and distributing the traffic across the
localities in the selected priority based on the locality weights.

Note that the EDS policy will support locality-level weights, but it
will *not* support endpoint-level weights. Providing a mechanism for
endpoint-level weighting will be addressed in future work.

Note that the EDS policy will *not* support
[overprovisioning](https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/upstream/load_balancing/overprovisioning),
which is different from Envoy. Envoy takes the
Expand Down Expand Up @@ -423,6 +427,7 @@ The `ClusterLoadAssignment` proto must have the following fields set:
unreachable. In each entry of the `lb_endpoints` field:
- If the `health_status` field has any value other than HEALTHY or
UNKNOWN, the entry will be ignored.
- The `load_balancing_weight` field will be ignored.
- The `endpoint` field must be set. Inside of it:
- The `address` field must be set. Inside of it:
- The `socket_address` field must be set. Inside of it:
Expand Down