SL lower bound key is never set

[CptnKirk]

I'm running into backoff issues in what should be a very lightly used system. I believe I've tracked the problem down to missing SL keys. I don't see any SL keys in my journal and in looking through the code it looks like they're only written for non-permanent deletes and I'm using permanent ones.

I manually prune my journal and the lack of lower bound is causing my deletemessages() and replay calls to become very expensive, even though there is only a single value for processor.

[CptnKirk]

original issue updated.

Looks like a problem where they're only written for non-permanent deletes. I might be able to fork a fix.