So, basically I encountered this bug in 21w16a but it is still in 21w17a. I don't know all the ways to get this bug, but this how I did.
I downloaded server.jar for 21w17a
I run it and I found good stuff like an Amethyst geode
I realize the caves and cliffs data pack is not there
I stop the server,put the datapack and re-run the server.
It started raining outside and the rain drops were inside the cave
P.S. this is how I encountered the bug, there might be another way.
Comments 10
I used the 21w16a datapack. This is when the bug occurred in my server. Then i used the 21w17a datapack and it was still there.
Did you happen to load this world in any of the 1.16 snapshots? More specifically snapshot 20w17a? If so, this is most likely a duplicate of MC-179845.
The ticket is saying to optimize my world, how do I do so? I am running a server.jar from https://mcversions.net/download/21w17a
Which week's datapack did you use? The CavesAndCliffsPreview.zip file updates every week (even though the name doesn't).
Also be aware of the bug MC-197616 , which can be summed up as "since 1.16.1 datapacks that change biomes in any way corrupt the world and eventually write errors to the logger so fast it crashes your computer". Because of this catastrophic bug NO version of CavesAndCliffsPreview.zip is safe to use. Having said that it's probably safe for creating a new world and testing stuff for 5-15 minutes before discarding the world.