>Part of a huge rocket that launched China’s first module for its Tianhe space station is falling back to Earth and could make an uncontrolled re-entry at an unknown landing point. > >The 30-metre high core of the Long March 5B rocket launched the “Heavenly Harmony” unmanned core module into low Earth orbit on 29 April from Wenchang in China’s Hainan province. > >The Long March 5B then itself entered a temporary orbit, setting the stage for one of the largest ever uncontrolled re-entries. Some experts fear it could land on an inhabited area. > >On Tuesday the core was orbiting Earth around every 90 minutes at about 27,600km/h and an altitude of more than 300km. The US military has named it 2021-035B and its path can be seen on websites including orbit.ing-now.com. >...
well, the thing is, this is basically one slide. This whole project has been weird because usually we do services stuff solo, but this has been a tag team. And that's fine, I've never done services work like this before, but just this one particular task seems particularly odd.
Actually, it's even weirder because this was supposed to be done by a different team, but then they realized they didn't have the expertise, so there are really three different people working this. It's an absolute shit show, but hey powerpoint slide.
customer is running a 72-hour test. I'm not sure if they are trying to test a DDoS or what, but the test seems to reliably fail around the 30 hour mark. Now, I haven't seen anything from the actual test. I think there is probably a security or application team involved and I am working with the systems team.
In any case, Infinispan is known to not survive gc because as a cache, it has a lot timeout. My thought was maybe they were having full gcs every 30 hours or so, but turns out they had 1689 full gcs in 7 hours. I told them that if they were trying to test full gcs, they needed to not test that often because it's not a realistic test. As far as the log was concerned, they were not actually able to evacuate properly, so that's one reason the gcs kept happening. They old gave the JVM 8GB RAM though. None of this makes any sense!
idk what they ended up changing, but they are running a new 72-hour test now, so something I said must have made sense to them.
I should have specified, a well-functioning java app. At some level, too many full gcs is going to be bad. I was trying to figure out that number. Suffice it to say, my research suggests that my customer is WAY over the limit.