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Please test this build on a local TEST SERVER before sending to your live server! PaperMC is not responsible for any data loss to your chunks. ------------------------------------------------------------------- The Minecraft World Region File format has a hard cap of 1MB per chunk. This is due to the fact that the header of the file format only allocates a single byte for sector count, meaning a maximum of 256 sectors, at 4k per sector. This limit can be reached fairly easily with books, resulting in the chunk being unable to save to the world. Worse off, is that nothing printed when this occured, and silently performed a chunk rollback on next load. This leads to security risk with duplication and is being actively exploited. This patch catches the too large scenario, falls back and moves any large Entity or Tile Entity into a new compound, and this compound is saved into a different file. On Chunk Load, we check for oversized status, and if so, we load the extra file and merge the Entities and Tile Entities from the oversized chunk back into the level to then be loaded as normal. Once a chunk is returned back to normal size, the oversized flag will clear, and no extra data file will exist. This fix maintains compatability with all existing Anvil Region Format tools as it does not alter the save format. They will just not know about the extra entities. This fix also maintains compatability if someone switches server jars to one without this fix, as the data will remain in the oversized file. Once the server returns to a jar with this fix, the data will be restored.
Paper 
High performance Spigot fork that aims to fix gameplay and mechanics inconsistencies.
Support and Project Discussion:
How To (Server Admins)
Paperclip is a jar file that you can download and run just like a normal jar file.
Download Paper from our downloads page.
Run the Paperclip jar directly from your server. Just like old times
- Documentation on using Paper: paper.readthedocs.io
- For a sneak peak on upcoming features, see here
How To (Plugin Developers)
- See our API patches here
- See upcoming, pending, and recently added API here
- Paper API javadocs here: papermc.io/javadocs
- Maven Repo (for paper-api):
<repository>
<id>papermc</id>
<url>https://papermc.io/repo/repository/maven-public/</url>
</repository>
- Artifact Information:
<dependency>
<groupId>com.destroystokyo.paper</groupId>
<artifactId>paper-api</artifactId>
<version>1.13.2-R0.1-SNAPSHOT</version>
<scope>provided</scope>
</dependency>
How To (Compiling Jar From Source)
To compile Paper, you need JDK 8, maven, and an internet connection.
Clone this repo, run ./paper jar from bash, get files.
How To (Pull Request)
See Contributing
Special Thanks To:
YourKit, makers of the outstanding java profiler, support open source projects of all kinds with their full featured Java and .NET application profilers. We thank them for granting Paper an OSS license so that we can make our software the best it can be.