[MC-147977] Exceptions are randomly thrown while saving from RCON

Since I made a bash-script to backup my world, I sometimes get these errors when saving the world using the "/save-all flush" command from RCON. Seems that each time the chunks which cause the error are random. For RCON connection I'm using mcrcon (sorry for bad formatting).

Seems that this is because of /save-on enabled at the moment of /save-all flush: I now first disable auto-saves by /save-off, then save the world, and only then re-enable auto-saving by /save-on and seems these exceptions are gone. I've also put 5-second sleep after the save before actually TAR'ing the world, just in case rcon response from save is async.

Just wanted you to know about it - maybe you consider it a bug. Note that these exceptions only occur when saving from RCON, when saving directly from console everything is also OK.

[03:15:01] [RCON Listener #1/INFO]: Rcon connection from: /127.0.0.1
[03:15:01] [RCON Listener #1/INFO]: Rcon connection from: /127.0.0.1
[03:15:01] [RCON Client #22/INFO]: ThreadedAnvilChunkStorage (DIM1): All chunks are saved
[03:15:01] [RCON Client #22/INFO]: ThreadedAnvilChunkStorage (DIM-1): All chunks are saved
[03:15:01] [RCON Client #22/ERROR]: Failed to save chunk 2,14java.util.ConcurrentModificationException: null at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) ~[?:1.8.0_201] at java.util.ArrayList$Itr.next(ArrayList.java:859) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:355) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:01] [RCON Client #22/ERROR]: Failed to save chunk 2,15java.util.ConcurrentModificationException: null at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) ~[?:1.8.0_201] at java.util.ArrayList$Itr.next(ArrayList.java:859) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:355) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:01] [RCON Client #22/ERROR]: Failed to save chunk 2,16java.util.ConcurrentModificationException: null at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1211) ~[?:1.8.0_201] at java.util.TreeMap$KeyIterator.next(TreeMap.java:1265) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:348) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:01] [RCON Client #22/ERROR]: Failed to save chunk -4,17java.util.ConcurrentModificationException: null at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) ~[?:1.8.0_201] at java.util.ArrayList$Itr.next(ArrayList.java:859) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:355) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:02] [RCON Client #22/INFO]: ThreadedAnvilChunkStorage (withsllh): All chunks are saved

[03:15:01] [RCON Listener #1/INFO]: Rcon connection from: /127.0.0.1
[03:15:01] [RCON Listener #1/INFO]: Rcon connection from: /127.0.0.1
[03:15:01] [RCON Client #22/INFO]: ThreadedAnvilChunkStorage (DIM1): All chunks are saved
[03:15:01] [RCON Client #22/INFO]: ThreadedAnvilChunkStorage (DIM-1): All chunks are saved
[03:15:01] [RCON Client #22/ERROR]: Failed to save chunk 2,14java.util.ConcurrentModificationException: null at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) ~[?:1.8.0_201] at java.util.ArrayList$Itr.next(ArrayList.java:859) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:355) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:01] [RCON Client #22/ERROR]: Failed to save chunk 2,15java.util.ConcurrentModificationException: null at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) ~[?:1.8.0_201] at java.util.ArrayList$Itr.next(ArrayList.java:859) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:355) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:01] [RCON Client #22/ERROR]: Failed to save chunk 2,16java.util.ConcurrentModificationException: null at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1211) ~[?:1.8.0_201] at java.util.TreeMap$KeyIterator.next(TreeMap.java:1265) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:348) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:01] [RCON Client #22/ERROR]: Failed to save chunk -4,17java.util.ConcurrentModificationException: null at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) ~[?:1.8.0_201] at java.util.ArrayList$Itr.next(ArrayList.java:859) ~[?:1.8.0_201] at bhn.a(SourceFile:118) ~[server.jar:?] at bhn.a(SourceFile:103) ~[server.jar:?] at bhn.a(SourceFile:149) ~[server.jar:?] at bxo.a(SourceFile:355) ~[server.jar:?] at us.a(SourceFile:550) ~[server.jar:?] at com.mojang.datafixers.util.Either$Left.ifLeft(Either.java:43) ~[server.jar:?] at us.a(SourceFile:342) ~[server.jar:?] at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$11$1.accept(ReferencePipeline.java:373) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_201] at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[?:1.8.0_201] at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_201] at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_201] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_201] at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_201] at us.a(SourceFile:339) ~[server.jar:?] at vd.a(SourceFile:216) ~[server.jar:?] at vf.a(SourceFile:742) ~[server.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:526) ~[server.jar:?] at sz.a(SourceFile:34) ~[server.jar:?] at sz.a(SourceFile:23) ~[server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262) [server.jar:?] at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176) [server.jar:?] at ce.a(SourceFile:223) [server.jar:?] at ug.a_(SourceFile:578) [server.jar:?] at yf.run(SourceFile:80) [server.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201][03:15:02] [RCON Client #22/INFO]: ThreadedAnvilChunkStorage (withsllh): All chunks are saved

Linked issues

duplicates 1

MC-72390 Rcon is not thread-safe Resolved

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