StateMgr must be able to return with locked state

[jbardin]

The current usage of internal remote state backends requires that
StateMgr be able to return an instance of statemgr.Full even if the
state is currently locked.

Fixes #28100

[jbardin]

=== RUN   TestBackend_impl
--- PASS: TestBackend_impl (0.00s)
=== RUN   TestBackend
--- PASS: TestBackend (6.27s)
=== RUN   TestBackend_lockDisabled
--- PASS: TestBackend_lockDisabled (0.05s)
=== RUN   TestRemoteClient_impl
--- PASS: TestRemoteClient_impl (0.00s)
=== RUN   TestRemoteClient
--- PASS: TestRemoteClient (0.06s)
=== RUN   TestEtcdv3_stateLock
--- PASS: TestEtcdv3_stateLock (2.11s)
=== RUN   TestEtcdv3_destroyLock
--- PASS: TestEtcdv3_destroyLock (0.07s)

[jasons42]

@jbardin Sorry to bother you about this, but is there anyone else who could review this, and my changes in #28078 if @bmcustodio is not available?

[jbardin]

Hi @jasons42,

Sorry about the delay here, @bmcustodio is the only contact listed in the CODEOWNERS for this package. I'm not sure how to go about getting another maintainer for the package, but I can check with @pkolyvas and see if there is anything we can do in the meantime.

[jasons42]

@jbardin Sorry to bug you again, but were you able to see if there are any options for getting this and my change to increase the max etcd message size? We've run into the max etcd message size in a couple places now and need to either get this fixed or migrate to a different backend.

As an aside, if the code owner is not around anymore, should the etcdv3 backend even be listed as supported in the documentation?

[jbardin]

Hi @jasons42, sorry, the support status is a good question. I'll see what I can do about changing that status and merging outstanding PRs.

[github-actions]

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