For the second time since January, mongodb has locked up, causing pb to become unresponsive.
There are multiple problems here:
pb probably isn't using pymongo as well as it should be; I'd rather pb report mongo is unavailable in an api response than hang indefinitely. I think actually defining 'unavailable' might be tricky though.
mongod doesn't write anything suspicious to its logs, so the root cause is still unknown
For the second time since January, mongodb has locked up, causing pb to become unresponsive.
There are multiple problems here: