NPE: Teleporting from the nether after attacking pigmen; [ERROR] Cound not schedule mailbox

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    • Type: Bug
    • Resolution: Unresolved
    • Priority: Minor
    • None
    • Affects Version/s: None
    • None
    • Environment:

      Linux (Fedora 31)

      openjdk 13.0.2 2020-01-14

       

    • git-Spigot-ae72bf4-183139d (MC: 1.15.2)
    • Yes

      Recently our server has been locking up at what seems like random but today we were able to reproduce it.

       

      One player is in the nether, one player is in the overworld. Have the nether player aggro some pigmen and then have the overworld player /tp him to themselves.

       

      This is on a vanilla server with NO plugins.

       

      The server will stop responding and then players will disconnect. After a short delay, the following will appear in the log:

       

      2020-04-13 20:09:19 [ERROR] Cound not schedule mailbox
java.util.concurrent.RejectedExecutionException: null
        at java.util.concurrent.ForkJoinPool.externalPush(ForkJoinPool.java:1889) ~[?:?]
        at java.util.concurrent.ForkJoinPool.externalSubmit(ForkJoinPool.java:1930) ~[?:?]
        at java.util.concurrent.ForkJoinPool.execute(ForkJoinPool.java:2462) ~[?:?]
        at net.minecraft.server.v1_15_R1.ThreadedMailbox.f(SourceFile:112) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.ThreadedMailbox.a(SourceFile:101) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.ChunkTaskQueueSorter.a(SourceFile:142) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.ChunkTaskQueueSorter.a(SourceFile:150) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) ~[?:?]
        at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?]
        at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2144) ~[?:?]
        at net.minecraft.server.v1_15_R1.Mailbox$1.a(SourceFile:32) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.ChunkTaskQueueSorter.b(SourceFile:59) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(SourceFile:144) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.ChunkProviderServer$a.executeTask(ChunkProviderServer.java:578) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(SourceFile:118) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.ChunkProviderServer$a.executeNext(ChunkProviderServer.java:589) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(SourceFile:127) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:108) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.World.getChunkAt(World.java:185) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IWorldReader.getChunkAt(SourceFile:108) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.World.getChunkAt(World.java:180) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.World.getType(World.java:493) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IBlockAccess.rayTraceBlock(IBlockAccess.java:30) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IBlockAccess.lambda$0(IBlockAccess.java:47) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IBlockAccess.a(IBlockAccess.java:128) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.IBlockAccess.rayTrace(IBlockAccess.java:46) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityLiving.hasLineOfSight(EntityLiving.java:2700) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityPigZombie$PathfinderGoalAngerOther.a(EntityPigZombie.java:222) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.PathfinderGoalHurtByTarget.g(PathfinderGoalHurtByTarget.java:91) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.PathfinderGoalHurtByTarget.c(PathfinderGoalHurtByTarget.java:57) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.PathfinderGoalWrapped.c(SourceFile:41) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.PathfinderGoalSelector.a(SourceFile:75) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) ~[?:?]
        at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]
        at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]
        at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]
        at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) ~[?:?]
        at java.util.Iterator.forEachRemaining(Iterator.java:133) ~[?:?]
        at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) ~[?:?]
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?]
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]
        at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) ~[?:?]
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) ~[?:?]
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) ~[?:?]
        at net.minecraft.server.v1_15_R1.PathfinderGoalSelector.doTick(SourceFile:69) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityInsentient.doTick(EntityInsentient.java:655) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityLiving.movementTick(EntityLiving.java:2521) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityInsentient.movementTick(EntityInsentient.java:512) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityMonster.movementTick(SourceFile:39) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityZombie.movementTick(EntityZombie.java:206) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityLiving.tick(EntityLiving.java:2353) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityInsentient.tick(EntityInsentient.java:275) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.EntityZombie.tick(EntityZombie.java:177) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.WorldServer.entityJoinedWorld(WorldServer.java:626) ~[spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.World.a(World.java:694) [spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.WorldServer.doTick(WorldServer.java:395) [spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1082) [spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:406) [spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:984) [spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:824) [spigot-1.15.2.jar:git-Spigot-ae72bf4-183139d]
        at java.lang.Thread.run(Thread.java:830) [?:?]

       

      See attachment for a more complete log output.

        1. error.log
          56 kB

            Assignee:
            Unassigned
            Reporter:
            Matt D.
            Votes:
            0 Vote for this issue
            Watchers:
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              Created:
              Updated: