Minecraft Snapshot 20w16a

Bastion remnants, or "home sweet home" as Piglins would call them, are finally here! This snapshot introduces the home of the Piglins. If you scour the world you might also find ruins of some old portals.

New Features in 20w16a

• Added Bastion Remnants!
• Added Ruined Portals
• Added chain blocks
• Added a new music disc titled "Pigstep" by Lena Raine which can only be found in Bastions Remnants

Bastion Remnants

What's made of Blackstone and full of piglins and hoglins? Bastion Remnants!

• Added 4 separate Bastion Remnant types: Bridge, Hoglin Stable, Housing Units, and Treasure Room
• You can find these sizable structures in all biomes in the Nether except the treacherous ash-dusted towers of Basalt Deltas
• Explore, loot, and conquer a Bastion Remnant to call it your home...but beware, Piglins don't take kindly to intruders stealing their things

Ruined Portals

Shattered remains of ancient nether portals. Wonder who built them?

• They can be found in any overworld or nether biome
• Some are hidden underground, under the sea, or buried in sand

Changes in 20w16a

• The piglin banner pattern can now be found in Bastion Remnants
• Increased the amount of lava pools to make the deltas more "deltary"

Technical Changes in 20w16a

• Added a button in the GUI that generates a jigsaw structure starting from the jigsaw block, using given generation depth.
• Expanded the max size per axis of Structure Blocks from 32 to 48
• Added a JMX MBean to monitor dedicated server tick times

JMX Monitoring

It is now possible to monitor the server tick times though JMX. The rationale for this is that JMX is a well known and supported monitoring technology with existing integrations and tools.

This enables server admins to hook alerts and graphing tools using ordinary JMX clients and dashboards.

Enabling JMX Monitoring

• A new flag enable-jmx-monitoring has been added to the server.properties file which if set to true will expose an MBean with the Object name net.minecraft.server:type=Server and two attributes averageTickTime and tickTimes exposing the tick times in milliseconds.
• In order for enabling JMX on the Java runtime you also need to add a couple of JVM flags to the startup as documented here.

Fixed bugs in 20w16a

• MC-37557 Sometimes a minecart sound plays/subtitle shown when loading a world
• MC-91163 Certain subtitles show up when the player is too far away to hear the sound
• MC-154617 Server hangs on stop due to rcon
• MC-171020 New nether biomes don't work properly in buffet worlds
• MC-175919 Villagers sometimes stop farming
• MC-177136 All compasses and lodestone compasses point to the same target, regardless of what type of compass it is
• MC-177238 Windows symbolic link in saves/ is no longer followed as of 20w14a
• MC-177253 Running a set_attributes function throws java.lang.NullPointerException if it contains an undefined attribute
• MC-177316 Lodestone compass in item frame does not update after turning
• MC-178368 When rotating a lodestone compass is put in the item frame the compass don't work