Some of my indexes appear to be failing during the nightly rebuild with this error:
ERROR: index ‘product’: raw_hits: write error: 122070 of 262017 bytes written
The only reference I can find on the internet is in some multibyte language that I can't read. Has anyone experienced this error before?
Sphinx is getting an error from the operating system that it can't write the file.
It sounds like you're running out of hard drive space, or encountering some other disk error.
If you are sure these are not the case, try reducing the max_iosize in your configuration.