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Java Edition 21w17a.png

Java Edition



Fecha de publicación

28 de abril de 2021

Snapshot para



Cliente (.json)

Mapas de ofuscación


Versión de protocolo

 dec: 1073741849
 hex: 40000019

Versión de datos


La 21w17a es la decimonovena snapshot para Java Edition 1.17, lanzada el 28 de abril de 2021,[1] que ajusta las texturas del bloque metálico en bruto, añade cuevas de fideos y corrige errores.



  • Se ha añadido la siguiente etiqueta de bloque: small_dripleaf_placeable.
    • Contiene bloques de arcilla y musgo.
    • En esta etiqueta se pueden colocar pequeñas gotas de agua en bloques.


Se han realizado cambios en el paquete de datos oficial de la generación de mundos de Caves & Cliffs, que da acceso anticipado a la generación de mundos que viene en Java Edition 1.18.[fn 1]

Cuevas de fideos
  • Una variante más fina, cuadriculada y ajustada de las cuevas de espaguetis.
  • Se trata de una versión mejorada de las cuevas de malla anunciadas en torno a Minecraft Live.



Cúmulo de Amatista
  • Se ha eliminado el estado de bloque 'iluminado' que no se utilizaba.
Bloque de Metal en Bruto
  • Se han retocado las texturas de Bloque de Hierro en Bruto, Bloque de Cobre en Bruto, y de Bloque de Oro en Bruto.
Copper and Deepslate Copper Ore
  • Now drops 2–3 raw copper when mined, or more when using a tool enchanted with Fortune.
Copper block
  • Are now crafted from 9 copper ingots, instead of 4.
Hanging roots
Small dripleaf
  • Can now also be placed on moss blocks.


  • Is now immune to freezing.

World Generation[]

  • Emerald ore can now replace granite, andesite, diorite, tuff, and deepslate upon generating.
  • If coal ore or copper ore replace tuff or deepslate, they will become their deepslate variants.


Recipe Book
  • The recipe for crafting mossy stone bricks from moss blocks or vines is now unlocked with moss blocks or vines, respectively, rather than mossy cobblestone.
  • The recipes for dyed candles are now grouped.
  • The recipes for smelting and blasting ores into their respective materials are now grouped by ore type (i.e. smelting coal ore and deepslate coal ore are grouped).
    • For iron, gold, and copper, the recipes for smelting and blasting their raw materials into ingots are also grouped with their respective ore smelting and blasting recipes.
  • The recipes for crafting copper ingots from copper blocks and waxed copper blocks are no longer grouped.[3]
  • The recipes for mossy stone bricks are now grouped, as are the recipes for mossy cobblestone.
  • Many of the waxed copper block recipes were grouped together.


  • Added the wither to the freeze_immune_entity_types entity type tag.


Changes have been made to the official Caves & Cliffs world generation preview datapack, which gives early access to the world generation coming in Java Edition 1.18.[fn 1]

Ore veins
  • Snake veins are now slightly rarer and slightly smaller.
  • Ores are clumpier and less evenly distributed.
  • Now have a chance to rarely contain raw metal blocks.


19 errores solucionados
De versiones publicadas antes de 1.17
  • MC-170443 – Banner copying recipe ignores existence of other items in crafting grid.
  • MC-187664 – World border uses float to determine its size, making some border sizes inaccessible, and cannot be set to 30 million or beyond.
  • MC-201269 – Constantly teleporting player to a phantom crashes the game/kicks the player.
De las versiones de desarrollo de 1.17
  • MC-203570 – Candles aren't grouped in the recipe book.
  • MC-203745 – Repeated teleport between dimensions causes the entity to duplicate on the client.
  • MC-204031 – Waxed Cut Copper (any level of weathered) have two separate recipes in the recipe book.
  • MC-214187 – Void platform generates multiple times.
  • MC-214735 – Horse disappears when dying while riding it and reloading the world while it's unloaded.
  • MC-214838 – Big dripleaf stem remains after breaking a stem or leaf above it.
  • MC-214865 – Floating islands world type generates extreme terrain.
  • MC-219155 – Fishing line only starts on half distance between the fishing rod and bobber (Apple M1 only).
  • MC-219840 – You cannot unlock the recipe for Mossy Stone Bricks.
  • MC-219842 – Recipes for mossy cobblestone and mossy stone bricks aren't grouped.
  • MC-220033 – (Parity issue) Hanging Roots can't be waterlogged.
  • MC-221560 – Copper/Coal Ore in Deepslate Patches aren't Deepslate Ores.
  • MC-222008 – Empty/missing template pool error grammar mistake.
  • MC-222520 – Raw and Ore smelting previews aren't grouped together.
  • MC-223055 – Amethyst buds and cluster have an unused blockstate.
  • MC-223792 – Shrinking world border with center past x/z = 29999983 crashes the game.


Videos made by slicedlime:


  • This is the first snapshot to implement a semi-revealed feature, namely mesh caves (renamed to noodle caves in this update).


  1. 1,0 1,1 CavesAndCliffsPreview.zip – Mojang, April 28, 2021


  1. "Minecraft Snapshot 21w17a" – Minecraft.net, April 28, 2021
  2. MC-220033
  3. MC-224389