Hi,
while working on a project I developed this simple system for managing the
execution of long running execute-once tasks. It uses the scheduler and it
provides a nice framework for logging and error reporting.
The main use case for this extension is batch import of data, but also
execute-once maintenance operations. Basically every task that is too long
or heavy to be carried on in a single request, and doesn't really qualify
to be a scheduler job.
You can think of this system as a task queue that is processed in the
background.
I am contributing it to xwiki contrib.
Thanks,
Fabio