[RedWingFan]

I've had an odd problem come up.

We only have Sphinx running on our private testing-only forum, where our staff puts it through the paces a bit. I noticed a few days ago that, during a search, I came up with this error message:

unknown local index 'threaddelta' in search request

Another of our staff got that error yesterday. I've been trying other searches on and off, but I can't duplicate the error.

On the server side, here's what I found. In my Sphinx data directory, all the files look OK, except for the threaddelta.* files. In fact, there is a set of threaddelta.* files that hasn't been touched since May 29. However, there is now a new group of files, threaddelta.new.* in the same directory that are getting updated every three minutes by our cron job.

I realize I could delete all the files rebuild the indexes, which I will do (this isn't exactly a critical forum, as it's just for testing), but I would still like to know how Sphinx is generating the "threaddelta.new.* files vs. the original "threaddelta.*" files. None of the config files or cron entries have been touched since last year, when I set this up.

We're about to roll out Sphinx on our main forum as we're getting slammed with traffic lately, but I'm still hesitant due to unresolved bugs...