Benjamin Wang 00b31512a1 etcdserver: return membership.ErrIDNotFound when the memberID not found ...

Backport https://github.com/etcd-io/etcd/pull/15095 to 3.4.

When promoting a learner, we need to wait until the leader's applied ID
catches up to the commitId. Afterwards, check whether the learner ID
exist or not, and return `membership.ErrIDNotFound` directly in the API
if the member ID not found, to avoid the request being unnecessarily
delivered to raft.

Signed-off-by: Benjamin Wang <wachao@vmware.com>

2023-01-17 06:27:31 +08:00

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