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Vertically stacked hoppers fail to pull before the upper one pushes if hopper-check is equal to hopper-transfer

Aperta
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#14,392 1 commento 0 reazioni 0 assegnatari Vedi su GitHub

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Dal 15/10/2026.

  • #14393 di @CanIGetaPR — aperta

Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
15/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Ferma
Stack tecnologico
java
Ambito
game-dev, performance

Direzione di ricerca

The payload names only the hopper-check and hopper-transfer settings in spigot.yml and the hopper tick ordering within a chunk; it does not name source files. Start by reading the open linked pull request #14393 to see what it already changes, since the work is under way. A newcomer could reproduce the skip with a vertical hopper chain and hopper-check: 8, then confirm that the fix keeps pull checks running every tick.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

status: needs triage
Expected behavior

A warning for server owners if they misconfigure hopper-check for performance reasons, or a deterministic approach to executing hopper ticks such as by order of placement in the chunk.

Observed/Actual behavior

Server owners can be unaware that hopper-check = hopper-transfer is causing unpredictable item skips for hopper filters and other usages of vertically stacked hoppers.

If the top hoppers tick executes before the bottom hoppers, it may push before the bottom hopper pulls. This can happen when all hopper cooldowns become synced and processed in the same tick.

Web Examples of misconfigured servers:
https://www.minerealm.com/community/viewtopic.php?t=14973
https://www.spigotmc.org/threads/what-is-hopper-check-in-spigot-yml.380434/

Steps/models to reproduce

Set hopper-check: 8 in spigot.yml and attempt to run a large automated item sort filter from a mob farm.

If the hopper chain and filter hoppers cooldowns regularly expire on the same tick, and a hopper chain hopper executes before the filter hopper, the item will be moved before the filter hopper sees it.

In vanilla minecraft all hoppers check if they can pull items every tick, therefore more often than the transfer cooldown expires of a hopper above it. hopper-check >= hopper-transfer causes pull checks to be delayed and miss their pull opportunity.

Plugin and Datapack List

None

Paper version

26.2-DEV-e5fe717

Other

No response

Lingua principale
Java
Stelle
12.7k
Fork
3.5k
Merge medio
2g 11h
PR unite (30g)
46

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