Applications that exit too quickly fail to flush their data

[jleibs]

Looks like a fairly standard shutdown race condition:

fast.py

import rerun as rr

rr.init("fast", spawn=True)
rr.log_rect("rect", [16, 16, 64, 64], label="Rect1", color=(255, 0, 0))

No data shows up.

slow.py:

import rerun as rr

rr.init("fast", spawn=True)
rr.log_rect("rect", [16, 16, 64, 64], label="Rect1", color=(255, 0, 0))
import time
time.sleep(0.1)

Data shows up.

[abey79]

I'm getting what appears to be sporadic instances of this behaviour, i.e. script returns quickly with exit code 0 and viewer is stuck on the "Ready - listening to port xxx". Got that at least with blueprint and car. Funnily, adding time.sleep(1) to car didn't seem to fix the issue.

Edit: it's probably something else as it occurs only when running from PyCharm.