Files
scylladb/docs
Tomasz Grabiec ba692d1805 schema_tables: Keep "replication" column backwards-compatible by expanding rack lists to numeric RF
In 380f243986 we added support for rack
lists in replication options. Drivers which are not prepared to parse
that (as of now, all of them), will not create metadata object for
that keyspace. This breaks, for example, the "copy to/from" cqlsh
command. Potentially other things too.

To fix that, keep the "replication" column in the old format, and
store numeric RF there, which corresponds to the number of
replicas. Accurate options in the new format are put in
"replication_v2".

We set replication_v2 in the schema only when it differs from the old
"replication" so that the new column is not set during upgrade,
otherwise downgrade would fail. Partition tombstone is added to ensure
that pre-alter replication_v2 value is deleted on alters which change
replication to a value which is the same as the post-alter
"replication" value.

Fixes #26415

Closes scylladb/scylladb#26429
2025-10-21 09:11:25 +03:00
..
2025-08-11 13:13:37 +02:00
2025-09-17 14:47:13 +02:00
2025-08-12 10:33:06 +03:00
2025-08-22 09:50:07 +03:00
2025-05-13 13:29:04 +03:00

ScyllaDB Documentation

This repository contains the source files for ScyllaDB documentation.

  • The dev folder contains developer-oriented documentation related to the ScyllaDB code base. It is not published and is only available via GitHub.
  • All other folders and files contain user-oriented documentation related to ScyllaDB and are sources for docs.scylladb.com/manual.

To report a documentation bug or suggest an improvement, open an issue in GitHub issues for this project.

To contribute to the documentation, open a GitHub pull request.

Key Guidelines for Contributors

To prevent the build from failing:

  • If you add a new file, ensure it's added to an appropriate toctree, for example:

     .. toctree::
        :maxdepth: 2
        :hidden:
    
        Page X </folder1/article1>
        Page Y </folder1/article2>
        Your New Page </folder1/your-new-article>
    
  • Make sure the link syntax is correct. See the guidelines on creating links

  • Make sure the section headings are correct. See the guidelines on creating headings Note that the markup must be at least as long as the text in the heading. For example:

    ----------------------
    Prerequisites
    ----------------------
    

Building User Documentation

Prerequisites

  • Python
  • poetry
  • make

See the ScyllaDB Sphinx Theme prerequisites to check which versions of the above are currently required.

Mac OS X

You must have a working Homebrew in order to install the needed tools.

You also need the standard utility make.

Check if you have these two items with the following commands:

brew help
make -h

Linux Distributions

Building the user docs should work out of the box on most Linux distributions.

Windows

Use "Bash on Ubuntu on Windows" for the same tools and capabilities as on Linux distributions.

Building the Docs

  1. Run make preview to build the documentation.
  2. Preview the built documentation locally at http://127.0.0.1:5500/.

Cleanup

You can clean up all the build products and auto-installed Python stuff with:

make pristine

Information for Contributors

If you are interested in contributing to Scylla docs, please read the Scylla open source page at http://www.scylladb.com/opensource/ and complete a Scylla contributor agreement if needed. We can only accept documentation pull requests if we have a contributor agreement on file for you.

Third-party Documentation

  • Do any copying as a separate commit. Always commit an unmodified version first and then do any editing in a separate commit.

  • We already have a copy of the Apache license in our tree, so you do not need to commit a copy of the license.

  • Include the copyright header from the source file in the edited version. If you are copying an Apache Cassandra document with no copyright header, use:

This document includes material from Apache Cassandra.
Apache Cassandra is Copyright 2009-2014 The Apache Software Foundation.