Hello,
Today I noticed that the apollo-slave-01 was stuck running an “Unknown Task”, causing a backlogged build queue of 38 items.
After a little research, it appears this sort of thing can occur if Jenkins encounters an unexpected error.
I have restarted the node and everything seems to be working fine now.
I don’t think any action needs to be taken at the moment, but in the future if anyone else runs into a similar failure, or if this sort of thing starts becoming common, we may wish to investigate further.
Torben