[Twisted-Python] Twisted and Thread, thread not running when twisted app is running as service

[Sereysethy TOUCH]

Hello,

I am developing a twisted app, and it runs as a service using twistd -y to
start the app.
I am having a problem of running a thread. I know it is not recommended to
use thread, but the library that I use, the object created is running in a
thread.

Here is the problem:

1) if I start reactor by running reactor.run() directly, thread is running
fine
2) if I run it as a service using twisted, the thread is not running, it
runs but it seems to be blocked, because I tried to write something to file
using time.sleep(), but file is empty.

Is there something that I miss? How can I debug this?

Thank you,

TS
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