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  1. Minecraft: Java Edition
  2. MC-94396

Tried to add entity X duplicate UUID Y

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Duplicate
    • Affects Version/s: Minecraft 15w49b
    • Fix Version/s: None
    • Labels:
      None
    • Confirmation Status:
      Unconfirmed

      Description

      Oftentimes the server can get spammed with warnings along the lines of:

      [11:54:24] [Server thread/WARN]: Tried to add entity Sheep with pending removal and duplicate UUID d361162c-e5ef-41e8-8df9-741688e73c1a
      [11:54:24] [Server thread/WARN]: Tried to add entity Villager with pending removal and duplicate UUID 44a5ac63-1215-4667-bed3-bdcde0055696

      It appears that the root cause of these warnings is a delay of a tick (or maybe more) between entity removal, during which time a required chunk may be reloaded.

      I have reproduced this in 14w49b Vanilla by flying around in creative at normal speed, but for a faster reproduction, the following may be helpful:

      /give @p minecraft:golden_boots 1 0 {AttributeModifiers:[{AttributeName:"generic.movementSpeed",Name:"generic.movementSpeed",Amount:10,Operation:1,UUIDLeast:894654,UUIDMost:2872}],display:{Name:"Speed Boots",Lore:["Put on for a 10x Speed boost!"]}}
      

      .

      It is likely this issue also affects 1.8.8 but is simply unnoticed as the warnings have only been added in the current snapshot series.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              md_5 [Mod] md_5
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                Dates

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                Updated:
                Resolved: