ipyparallel broken for tornado 4.5.3 ("RuntimeError: IOLoop is already running")

I need to use tornado 4.5.3 because of this issue jupyter/notebook#3397

I tried to connect to an ipycluster and get the following error:

"RuntimeError: IOLoop is already running"

This problem was introduced quite recently because it was not present in 6.1.1.

Actually, I also tried installing ipython/ipykernel#323 and ipython/ipython#11155 with the new tornado, that that didn't help.

Probably an artifact of the tornado 5 support that messed something up with old tornado. Probably need to add a condition somewhere.

@basnijholt

@basnijholt I think this is fixed by #337.

Released 6.2.2 with the fix

Navigation Menu