MCServer Crash

[FalkAlexander]

At one of my MCServer servers encountered often a crash, now I founded out something about it:

[22:58:50] Growing melon/pumpkin overwriting air, growing on grass
[22:59:37] InflateString: inflation failed: -3 ("incorrect data check").
Warn [22:59:37] Uncompressing chunk [9, 1] failed: -3
Err  [22:59:37] LoadChunkFromData (285): Loading chunk [9, 1] from file r.0.0.mca failed. The server will now abort in order to avoid further data loss. Please add the reported file and this message to the issue report.
Err  [22:59:37]   D:    | MCServer has encountered an error and needs to close
Err  [22:59:37] Details | SIGSEGV: Segmentation fault
Err  [22:59:37]   D:    | MCServer has encountered an error and needs to close
Err  [22:59:37] Details | SIGABRT: Server self-terminated due to an internal fault
[22:59:37] Shutting down server...

Crashes before this one, were triggered by destroying a pumpkin block, but not every pumpkin triggered a crash, only a special one (didn't know why). In creative and also survival.
Removing per worldedit had helped.

But now it crashes again, didn't know if its again a pumkin or so, but the log sounds like this.

[worktycho]

Can you upload the mca file and link to it?

[FalkAlexander]

Yes, of course, but they have a really big filesize.
https://minefight.org/ftp/?dir=region

[FalkAlexander]

Lol, for some reason the webpage is not listing the files.
I've created a tar file:
http://minefight.org/region.tar.gz

[FalkAlexander]

I now have destroyed a pumkin, and the server crashed again. Strange. No error in log.

[FalkAlexander]

Removing all pumkin plants+pumpkins works, no more crashes, also with new ones at the same place.

[FalkAlexander]

After a restart of the server, the same issue came back:
https://youtu.be/4kpg-SdGlz8
https://youtu.be/b4-vpqpXMIQ

I also created a video where I try to replace the pumpkins with stone, and it's very interesting to see what happens:
https://youtu.be/Fr6sqNl-qLI

[madmaxoft]

The //replace command apparently doesn't work because what you're actually asking it to do is "replace all pumpkins that have a meta value of 0 with stone". So only those facing one specific direction are replaced.

[SafwatHalaby]

Just a reminder of the new flow: when this is resolved, it should be merged to testing.

[FalkAlexander]

Are there now branches? If yes, how to compile builds from the different branches?

[worktycho]

There are branches. To compile master just keep what your doing. To compile testing you need to checkout the testing branch before compiling.

[FalkAlexander]

Thanks!

[SafwatHalaby]

It's all "under construction", you can see the conversation here. We already have "master" and "testing", once testing is stable for a while it is merged into "stable", there isn't a stable yet because this is all brand new and no "testing" has been graduated to "Stable" yet.

Right now, Master and Testing are pretty much identical stability-wise :P
I suggest you just keep doing what you're doing until this business is ready.

[SafwatHalaby]

What's the status of this?

[FalkAlexander]

Pumkin/Melon growing, planting and destroying works without crash.

[SafwatHalaby]

Is this just pure luck or can we safely close this and get 1 step closer to the stable release?

[FalkAlexander]

Some days ago I asked the players to try melons and pumpkins and no crash happened, they also sayed that it is working fine. So I assume, that it is now fully fixed.

[SafwatHalaby]

@tigerw @worktycho @madmaxoft Did anyone actually fix this or is @falkseidl lucky? Can we close it?

[madmaxoft]

I'll write the code for offloading mangled chunks into a separate file and regenerating. I don't think there's anything else left in this issue.

[madmaxoft]

Chunk offloading finished in PR #2400