[MC-82779] SMP: Failed to save chunk

I'm seeing this error in the log every time I do /save-all ...

[10:23:03] [Server thread/ERROR]: Failed to save chunk
e: Saving entity NBT
	at pk.e(SourceFile:1192) ~[minecraft_server.jar:?]
	at pk.d(SourceFile:1150) ~[minecraft_server.jar:?]
	at anj.a(SourceFile:225) ~[minecraft_server.jar:?]
	at anj.a(SourceFile:95) [minecraft_server.jar:?]
	at ld.b(SourceFile:160) [minecraft_server.jar:?]
	at ld.a(SourceFile:204) [minecraft_server.jar:?]
	at le.a(SourceFile:763) [minecraft_server.jar:?]
	at net.minecraft.server.MinecraftServer.a(SourceFile:364) [minecraft_server.jar:?]
	at net.minecraft.server.MinecraftServer.A(SourceFile:553) [minecraft_server.jar:?]
	at net.minecraft.server.MinecraftServer.run(SourceFile:451) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_05]
Caused by: java.lang.NullPointerException
	at acz.k(SourceFile:129) ~[minecraft_server.jar:?]
	at ada.a(SourceFile:134) ~[minecraft_server.jar:?]
	at wi.b(SourceFile:228) ~[minecraft_server.jar:?]
	at pk.e(SourceFile:1180) ~[minecraft_server.jar:?]
	... 10 more

---- Minecraft Profiler Results ----
// Speedy. Zoooooom!

Time span: 17981 ms
Tick span: 359 ticks
// This is approximately 19.97 ticks per second. It should be 20 ticks per second

--- BEGIN PROFILE DUMP ---

[00] levels - 98.45%/98.45%
[00] jobs - 1.41%/1.41%
[01]  unspecified - 48.65%/0.69%
[01]  travel - 24.26%/0.34%
[02]   move - 52.22%/0.18%
[02]   unspecified - 26.87%/0.09%
[02]   rest - 20.91%/0.07%
[01]  entityBaseTick - 8.98%/0.13%
[02]   unspecified - 95.39%/0.12%
[02]   portal - 4.61%/0.01%
[01]  livingEntityBaseTick - 6.58%/0.09%
[01]  move - 4.60%/0.06%
[01]  rest - 2.90%/0.04%
[01]  ai - 2.11%/0.03%
[02]   unspecified - 73.18%/0.02%
[02]   newAi - 26.82%/0.01%
[01]  push - 1.08%/0.02%
[01]  headTurn - 0.58%/0.01%
[01]  rangeChecks - 0.16%/0.00%
[01]  jump - 0.10%/0.00%
[00] connection - 0.08%/0.08%
[01]  unspecified - 95.48%/0.08%
[01]  keepAlive - 4.52%/0.00%
[00] unspecified - 0.04%/0.04%
[00] tickables - 0.00%/0.00%
[00] players - 0.00%/0.00%
[00] tallying - 0.00%/0.00%
[00] snooper - 0.00%/0.00%
--- END PROFILE DUMP ---

Possibly caused by corrupt villager data, see MC-85027.

Related issues

is duplicated by

MC-119739 Death causes game crash

relates to

MC-77255 Server: ConcurrentModificationException

Attachments

crash-2015-07-28_10.53.37-client.txt

Screen Shot 2015-08-02 at 9.43.18 PM.png

Screen Shot 2015-08-02 at 9.43.30 PM.png

Comments

migrated 2015-07-28T17:27:23Z

[media][media][media]

migrated 2015-07-28T17:33:15Z

[10:30:55] [RCON Client #2108/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_05]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_05]
	at le.a(SourceFile:571) ~[minecraft_server.jar:?]
	at le.a(SourceFile:554) ~[minecraft_server.jar:?]
	at anj.a(SourceFile:241) ~[minecraft_server.jar:?]
	at anj.a(SourceFile:95) [minecraft_server.jar:?]
	at ld.b(SourceFile:160) [minecraft_server.jar:?]
	at ld.a(SourceFile:204) [minecraft_server.jar:?]
	at le.a(SourceFile:763) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at ko.a_(SourceFile:558) [minecraft_server.jar:?]
	at mn.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_05]
[10:30:55] [RCON Client #2108/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_05]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_05]
	at le.a(SourceFile:571) ~[minecraft_server.jar:?]
	at le.a(SourceFile:554) ~[minecraft_server.jar:?]
	at anj.a(SourceFile:241) ~[minecraft_server.jar:?]
	at anj.a(SourceFile:95) [minecraft_server.jar:?]
	at ld.b(SourceFile:160) [minecraft_server.jar:?]
	at ld.a(SourceFile:204) [minecraft_server.jar:?]
	at le.a(SourceFile:763) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at ko.a_(SourceFile:558) [minecraft_server.jar:?]
	at mn.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_05]

migrated 2015-07-28T17:34:36Z

force a crash by pressing f3+c for 10 seconds while in game, and attach it

migrated 2015-07-28T17:54:49Z

"/save all" is not a vanilla Minecraft command. This should be reported to the developer of the plugin this command is from.

migrated 2015-07-28T17:56:01Z

Ok, I attached a client crash report while logged into affected server.

migrated 2015-07-28T17:57:27Z

Marshall Mohror it is vallina, only servers can use it

migrated 2015-07-28T18:02:18Z

My bad, but according to the wiki, the syntax is /save-all, not /save all

migrated 2015-07-28T18:02:51Z

Oh wait thats what he typed, sorry again

migrated 2015-07-29T15:27:19Z

Seeing something similar in 1.9 snapshot (15w31a), this appears to also prevent login on servers going from 1.8.8 to snapshot.

[08:24:23] [File IO Thread/ERROR]: Failed to save chunk
java.io.UTFDataFormatException: encoded string too long: 65538 bytes
	at java.io.DataOutputStream.writeUTF(DataOutputStream.java:364) ~[?:1.8.0_51]
	at java.io.DataOutputStream.writeUTF(DataOutputStream.java:323) ~[?:1.8.0_51]
	at ea.a(SourceFile:29) ~[minecraft_server.jar:?]
	at dn.a(SourceFile:407) ~[minecraft_server.jar:?]
	at dn.a(SourceFile:54) ~[minecraft_server.jar:?]
	at du.a(SourceFile:45) ~[minecraft_server.jar:?]
	at dn.a(SourceFile:407) ~[minecraft_server.jar:?]
	at dn.a(SourceFile:54) ~[minecraft_server.jar:?]
	at dn.a(SourceFile:407) ~[minecraft_server.jar:?]
	at dn.a(SourceFile:54) ~[minecraft_server.jar:?]
	at dx.a(SourceFile:91) ~[minecraft_server.jar:?]
	at dx.a(SourceFile:79) ~[minecraft_server.jar:?]
	at aov.b(SourceFile:139) ~[minecraft_server.jar:?]
	at aov.c(SourceFile:124) [minecraft_server.jar:?]
	at awb.c(SourceFile:37) [minecraft_server.jar:?]
	at awb.run(SourceFile:30) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

migrated 2015-08-02T18:51:57Z

Still seeing this problem in 15w31c:

[11:51:03] [RCON Client #1763/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_51]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_51]
	at lg.a(SourceFile:572) ~[minecraft_server.jar:?]
	at lg.a(SourceFile:555) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:240) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:95) [minecraft_server.jar:?]
	at lf.b(SourceFile:156) [minecraft_server.jar:?]
	at lf.a(SourceFile:200) [minecraft_server.jar:?]
	at lg.a(SourceFile:764) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kp.a_(SourceFile:557) [minecraft_server.jar:?]
	at mp.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
[11:51:03] [RCON Client #1763/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_51]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_51]
	at lg.a(SourceFile:572) ~[minecraft_server.jar:?]
	at lg.a(SourceFile:555) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:240) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:95) [minecraft_server.jar:?]
	at lf.b(SourceFile:156) [minecraft_server.jar:?]
	at lf.a(SourceFile:200) [minecraft_server.jar:?]
	at lg.a(SourceFile:764) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kp.a_(SourceFile:557) [minecraft_server.jar:?]
	at mp.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
[11:51:04] [RCON Client #1763/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_51]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_51]
	at lg.a(SourceFile:572) ~[minecraft_server.jar:?]
	at lg.a(SourceFile:555) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:240) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:95) [minecraft_server.jar:?]
	at lf.b(SourceFile:156) [minecraft_server.jar:?]
	at lf.a(SourceFile:200) [minecraft_server.jar:?]
	at lg.a(SourceFile:764) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kp.a_(SourceFile:557) [minecraft_server.jar:?]
	at mp.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
[11:51:04] [RCON Client #1763/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_51]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_51]
	at lg.a(SourceFile:572) ~[minecraft_server.jar:?]
	at lg.a(SourceFile:555) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:240) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:95) [minecraft_server.jar:?]
	at lf.b(SourceFile:156) [minecraft_server.jar:?]
	at lf.a(SourceFile:200) [minecraft_server.jar:?]
	at lg.a(SourceFile:764) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kp.a_(SourceFile:557) [minecraft_server.jar:?]
	at mp.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
[11:51:04] [RCON Client #1763/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_51]
	at java.util.ArrayList$Itr.next(ArrayList.java:851) ~[?:1.8.0_51]
	at lg.a(SourceFile:572) ~[minecraft_server.jar:?]
	at lg.a(SourceFile:555) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:240) ~[minecraft_server.jar:?]
	at aow.a(SourceFile:95) [minecraft_server.jar:?]
	at lf.b(SourceFile:156) [minecraft_server.jar:?]
	at lf.a(SourceFile:200) [minecraft_server.jar:?]
	at lg.a(SourceFile:764) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kp.a_(SourceFile:557) [minecraft_server.jar:?]
	at mp.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

migrated 2015-08-03T04:45:00Z

These "failed to save chunk" messages seem to correlate with high memory usage.

migrated 2015-08-03T04:50:18Z

I'm attaching Plumbr reports taken while running 15w31c for many hours.

migrated 2015-08-05T15:51:32Z

Still seeing this problem in 15w32a:

[08:50:01] [RCON Client #135/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_51]
	at java.util.ArrayList$Itr.next(ArrayList.java:851) ~[?:1.8.0_51]
	at lg.a(SourceFile:573) ~[minecraft_server.jar:?]
	at lg.a(SourceFile:556) ~[minecraft_server.jar:?]
	at aps.a(SourceFile:241) ~[minecraft_server.jar:?]
	at aps.a(SourceFile:96) [minecraft_server.jar:?]
	at lf.b(SourceFile:156) [minecraft_server.jar:?]
	at lf.a(SourceFile:200) [minecraft_server.jar:?]
	at lg.a(SourceFile:765) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kp.a_(SourceFile:557) [minecraft_server.jar:?]
	at mp.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

migrated 2015-08-06T19:43:22Z

Still seeing this problem in 15w32b:

[12:40:47] [RCON Client #3516/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
  at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_51]
  at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_51]
  at lg.a(SourceFile:574) ~[minecraft_server.jar:?]
  at lg.a(SourceFile:557) ~[minecraft_server.jar:?]
  at apz.a(SourceFile:241) ~[minecraft_server.jar:?]
  at apz.a(SourceFile:96) [minecraft_server.jar:?]
  at lf.b(SourceFile:156) [minecraft_server.jar:?]
  at lf.a(SourceFile:200) [minecraft_server.jar:?]
  at lg.a(SourceFile:766) [minecraft_server.jar:?]
  at ay.a(SourceFile:37) [minecraft_server.jar:?]
  at j.a(SourceFile:80) [minecraft_server.jar:?]
  at j.a(SourceFile:63) [minecraft_server.jar:?]
  at kp.a_(SourceFile:557) [minecraft_server.jar:?]
  at mp.run(SourceFile:80) [minecraft_server.jar:?]
  at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

kumasasa 2015-08-06T19:47:53Z

@@unknown: Please update the Affected Versions, you are the author of this ticket...

migrated 2015-08-07T15:21:57Z

15w32c:

[08:20:03] [RCON Client #61/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_51]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_51]
	at lg.a(SourceFile:574) ~[minecraft_server.jar:?]
	at lg.a(SourceFile:557) ~[minecraft_server.jar:?]
	at apz.a(SourceFile:241) ~[minecraft_server.jar:?]
	at apz.a(SourceFile:96) [minecraft_server.jar:?]
	at lf.b(SourceFile:161) [minecraft_server.jar:?]
	at lf.a(SourceFile:205) [minecraft_server.jar:?]
	at lg.a(SourceFile:766) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kp.a_(SourceFile:557) [minecraft_server.jar:?]
	at mp.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

migrated 2015-08-14T20:02:53Z

15w33c:

[13:00:38] [RCON Client #2299/ERROR]: Failed to save chunk
java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1207) ~[?:1.8.0_51]
	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1261) ~[?:1.8.0_51]
	at lk.a(SourceFile:574) ~[minecraft_server.jar:?]
	at lk.a(SourceFile:557) ~[minecraft_server.jar:?]
	at aqq.a(SourceFile:244) ~[minecraft_server.jar:?]
	at aqq.a(SourceFile:100) [minecraft_server.jar:?]
	at lj.b(SourceFile:156) [minecraft_server.jar:?]
	at lj.a(SourceFile:200) [minecraft_server.jar:?]
	at lk.a(SourceFile:766) [minecraft_server.jar:?]
	at ay.a(SourceFile:37) [minecraft_server.jar:?]
	at j.a(SourceFile:80) [minecraft_server.jar:?]
	at j.a(SourceFile:63) [minecraft_server.jar:?]
	at kt.a_(SourceFile:558) [minecraft_server.jar:?]
	at mt.run(SourceFile:80) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

migrated 2015-11-22T09:09:39Z

confirmed in 15w47c
e: saving entity NBT

Erik Broes 2015-11-22T09:14:30Z

What are you doing over RCON?

migrated 2015-11-22T18:13:23Z

I'm getting this issue on my server. I have not seen it before but it is very much present in 15w47c:

[19:06:17] [Server thread/ERROR]: Failed to save chunk
e: Saving entity NBT
at ro.e(SourceFile:1302) ~[minecraft_server.15w47c.jar:?]
at ro.d(SourceFile:1243) ~[minecraft_server.15w47c.jar:?]
at ask.a(SourceFile:216) ~[minecraft_server.15w47c.jar:?]
at ask.a(SourceFile:102) [minecraft_server.15w47c.jar:?]
at lo.b(SourceFile:147) [minecraft_server.15w47c.jar:?]
at lo.a(SourceFile:166) [minecraft_server.15w47c.jar:?]
at lp.a(SourceFile:885) [minecraft_server.15w47c.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:370) [minecraft_ser
ver.15w47c.jar:?]
at net.minecraft.server.MinecraftServer.C(SourceFile:570) [minecraft_ser
ver.15w47c.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:456) [minecraft_s
erver.15w47c.jar:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_65]
Caused by: java.lang.NullPointerException
at zr.b(SourceFile:429) ~[minecraft_server.15w47c.jar:?]
at aai.b(SourceFile:134) ~[minecraft_server.15w47c.jar:?]
at ro.e(SourceFile:1284) ~[minecraft_server.15w47c.jar:?]
... 10 more

pascalos99 2016-04-05T15:29:57Z

this is also present in 1.9.2, or at least something that looks like it:

[17:13:36 ERROR]: Failed to save chunk
e: Saving entity NBT
at rr.e(SourceFile:1322) ~[minecraft_server.jar:?]
at rr.d(SourceFile:1263) ~[minecraft_server.jar:?]
at ass.a(SourceFile:216) ~[minecraft_server.jar:?]
at ass.a(SourceFile:102) [minecraft_server.jar:?]
at lo.b(SourceFile:147) [minecraft_server.jar:?]
at lo.a(SourceFile:166) [minecraft_server.jar:?]
at lp.a(SourceFile:883) [minecraft_server.jar:?]
at net.minecraft.server.MinecraftServer.a(SourceFile:371) [minecraft_server.jar:?]
at net.minecraft.server.MinecraftServer.C(SourceFile:571) [minecraft_server.jar:?]
at net.minecraft.server.MinecraftServer.run(SourceFile:457) [minecraft_server.jar:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_71]
Caused by: java.lang.NullPointerException
at ahg.k(SourceFile:130) ~[minecraft_server.jar:?]
at ahh.a(SourceFile:132) ~[minecraft_server.jar:?]
at ze.b(SourceFile:258) ~[minecraft_server.jar:?]
at rr.e(SourceFile:1304) ~[minecraft_server.jar:?]
at rr.c(SourceFile:1253) ~[minecraft_server.jar:?]
at rr.e(SourceFile:1310) ~[minecraft_server.jar:?]
... 10 more

wobst.michael 2019-03-24T17:23:15Z

Is this still an issue in the most recent versions (currently that is 1.13.2, or the latest snapshot 19w12a) of Minecraft?