mirror of https://github.com/grpc/grpc-java.git
70dd45ae70
Delaying handleResolvedAddresses() for propagating configs to the child LB policy can be problematic. For example, if channel shutdown has been enqueued when calling child policy's handleResolvedAddresses() is being enqueued (e.g., receiving updates from XdsClient), it should not be executed. Otherwise, subchannels may be created by LBs that have already been shut down. This change fixes LB config propagations in LB policies that manage a group of child LBs and delay the propagation for avoiding reentrancy. LB policies will always directly propagate child LB config/addresses updates directly. On the other hand, upcalls from child LB policies for balancing state updates will be queued and executed later. |
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