envoyproxy/envoy
Non-hermetic DNS testing in eg dynamic_forward_proxy is causing recurring failure/slowness
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#42.217 geöffnet am 24.11.2025
area/ciarea/dynamic_forward_proxyarea/test flakesbughelp wanted
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Beschreibung
I stumbled upon this issue with the mobile test //test/common/integration:client_integration_test
in that case the test had a total timeout and was querying dns for doesnotexist - dns was retrying 3x, and taking 5+ seconds to respond on each try - blowing the tests total timeout budget
im struggling to find how i resolved the issue in mobile - but it seems i got past it
this problem has again occurred when trying to update the build image - asan and gcc are reliably timeouting on similar tests - and it looks like for similar reasons
i would have thought these tests should not be calling any real dns - it should be mocked and hermetic