envoyproxy/envoy

RTDS snapshot should be pinned to each stream

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#10.731 aperta il 9 apr 2020

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area/runtimehelp wanted

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Descrizione

Title: we should keep runtime's consistency during a request's lifecycle.

Description: runtime layers should be consistent during processing of a request.

Repro steps:

a bug scenario: filter A reads version 1 of runtime snapshot, filter A stopIteration, waits for a some callback result, say on-demand-rds a new Runtime snapshot (version 2) is pushed by RTDS, filter A resume the filter iteration, and filter B now sees version 2 when it reads from loader.runtime().snapshot()

IMO, We should latch the runtime snapshot to a stream during its creation time.

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