rsync creating 0-length files?

[Dan Stromberg]

Is there any precedent for rsync creating 0 length files that should've
had content in them?  IE, has anyone ever seen this before?

We were doing a roughly 1 terabyte transfer, and upon running a python
script to verify the integrity of the transfer, we discovered a small
number of files that were 0 length, that shouldn't have been, all in the
same user's account.

Thanks!