load balancer: earlyExitNonLocalityRouting support for the thread aware load balancer
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area/load balancing
enhancement
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- C++
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Description
*Title*: *load balancer: earlyExitNonLocalityRouting support for the thread aware load balancer*
*Description*:
If the `locality_weighted_lb_config` in cluster is set, but the `locality` in the `LocalityLbEndpoints` is not set, then the thread aware load balancer may create empty hash ring.
It would be better to support some pre-check for the thread aware load balancer, like the zone aware load balancer do.
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