auto_modules is sometimes empty

[simonLeary42]

I don't have a way of reproducing this, but twice now on my system we have had the value for context.auto_modules_foobar be an empty string in a batch connect job. Restarting web server fixes it. Any ideas on how this could happen?

[johrstrom]

I don't have a way of reproducing this, but twice now on my system we have had the value for context.auto_modules_foobar be an empty string in a batch connect job. Restarting web server fixes it. Any ideas on how this could happen?

I've also noticed this from time to time - as if the file it read wasn't complete or didn't read the file at all? Or maybe the cache was busted, but not re-populated?

[simonLeary42]

found a JSON parse error in /var/log/ondemand-nginx/username/error.log. Perhaps the user should be instructed to use fcntl / flock when writing this file, and OOD should do the same when reading? Or, could there be some front-end interface for reattempting to read this file?

[simonLeary42]

The user could also be instructed to quickly mv the spider cache file rather than overwriting it with >, that way the length of time that the file is malformed is much shorter.