Sirius-LiXiaoQi commented on issue #16397:
URL: https://github.com/apache/dubbo/issues/16397#issuecomment-5115336572
Without framework support, the recommended engineering workaround is to
insert two steps before sending SIGTERM for shutdown:
**(step 1) offlineApp** — actively deregister the service from the
registry;
**(step 2) a grace-period wait** — eg: sleep(5000);
**(step 3) SIGTERM**.
Together these let the provider drain outstanding requests, eliminating the
race condition in which pathResolver.resolve fails with NOT_FOUND while
resolving the Invoker.
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