xds:Cleanup to reduce test flakiness #11895
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…the final result will be sent since depending on timing there may be configs sent for clusters being removed with their entries as errors.
ejona86
approved these changes
Feb 14, 2025
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There is a possibility that when clusters are removed from a configuration, they can have their XdsClient subscriptions notified about being absent (since CDS is state of the world) which generates a callback to doesNotExist. If this happens before the CdsWatcher object is cancelled, then a new XdsConfig is sent which has those clusters marked as being in error (Status rather than value). The tests need to just ignore those updates.