This PR was initially only to resolve the flaky flaky TestAddressResolver.resolveGoodName. It turned out, that the flakiness was "just" a too short DNS query timeout of 250ms. which can easily be too low to resolve names from external DNS.
However, the fact that failed resolutions are recovered to an "empty list" can be problematic. So this PR also removes the "silent recovery" and propagates DNS resolution errors, which are then "handled" by CacheInvalidationSender by not using an incomplete result.
This PR was initially only to resolve the flaky flaky
TestAddressResolver.resolveGoodName. It turned out, that the flakiness was "just" a too short DNS query timeout of 250ms. which can easily be too low to resolve names from external DNS.However, the fact that failed resolutions are recovered to an "empty list" can be problematic. So this PR also removes the "silent recovery" and propagates DNS resolution errors, which are then "handled" by
CacheInvalidationSenderby not using an incomplete result.