Server error - users (sometimes?) cant login, yet server is online. Almost like its frozen.

Hi Guys,

I'm running a devbukkit 1.1 server, and the last 2 days (overnight) the server has basically crashed. Plugins are still running, scheduled stuff runs and minestatus etc reports it as online.

However, the users cannot login (End of stream messages) and when i look at players online, it shows that the players that were online at the time of the crash.

Version: 2012-01-23 01:59:30 [INFO] This server is running Craftbukkit version git-Bukkit-1.0.1-R1-102-gbc4d4c1-b1796jnks (MC: 1.1) (Implementing API version 1.1-R1-SNAPSHOT)

The error before crash point:

Code:

2012-01-22 19:00:39 [INFO] Fetching addPacket for removed entity: CraftItem
2012-01-22 19:00:39 [SEVERE] java.lang.NullPointerException
2012-01-22 19:00:39 [SEVERE]    at net.minecraft.server.NetServerHandler.sendPacket(NetServerHandler.java:685)
2012-01-22 19:00:39 [SEVERE]    at net.minecraft.server.EntityTrackerEntry.b(EntityTrackerEntry.java:191)
2012-01-22 19:00:39 [SEVERE]    at net.minecraft.server.EntityTracker.updatePlayers(EntityTracker.java:144)
2012-01-22 19:00:39 [SEVERE]    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:541)
2012-01-22 19:00:39 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:434)
2012-01-22 19:00:39 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)
2012-01-22 19:00:39 [SEVERE] Unexpected exception
java.lang.NullPointerException
    at net.minecraft.server.NetServerHandler.sendPacket(NetServerHandler.java:685)
    at net.minecraft.server.EntityTrackerEntry.b(EntityTrackerEntry.java:191)
    at net.minecraft.server.EntityTracker.updatePlayers(EntityTracker.java:144)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:541)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:434)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Any pointers people can provide would be amazing!

 

That happened to me it basically happens on launch. If you just Opened the server and left without watching it load you might of noticed it crashed. When you open your server check until everything is loaded. Also this is a dev build so you shouldn't complain.

 

It wasnt on load, server had been up for 12hours previously without issue. After a bit of googling it appears to be an issue with the latest builds (friday/saturday) and its worth downgrading apparently.

 

Have been noticing this since the 1.0 release of CB. The error that you are seeing happens when an entity does something funky like fall out of the world but not 'de-spawn'. If you want to remove all entities, follow the region fixer part of this guide:
http://forums.bukkit.org/threads/how-to-fix-your-world-errors-corrupt-chunks.54254/

And change the entity-limit to 1.
Alternatively, there are some plugins that can remove certain types of entity. I believe worldguard/worldedit can do it.