Eval on a single shard does not log exec to journal

[adiholden]

When running eval on a single shard we have an optimisation for a single hop
inside Service::EvalInternal if (CanRunSingleShardMulti(sid, *params, *tx)
When this optimisation is taking place we log to journal all the executed commands in the script with MULTI opcode but when finishing running the script we do not journal EXEC opcode.
This bug is causing replica to get stuck on execution and memory continues to grow untill oom occurs.

[dranikpg]

Will follow up with a separate quick PR, but generally #2376 will be a proper solution

[romange]

@dranikpg how long do you think it will take to implement #2376? Maybe it's worth just wait for this PR to land?

[dranikpg]

Okay, let's merge it before the remaining refactoring, it doesn't rely much on the parts left. I'll polish it and it's ready for review

[dranikpg]

@romange PTAL at the PR if you want this issue closed 🙄