67 lines
2.3 KiB
Markdown
67 lines
2.3 KiB
Markdown
# MariaDB MaxScale 2.1.5 Release Notes
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Release 2.1.5 is a GA release.
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This document describes the changes in release 2.1.5, when compared to
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release [2.1.4](MaxScale-2.1.4-Release-Notes.md).
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If you are upgrading from release 2.0, please also read the following
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release notes:
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[2.1.4](./MaxScale-2.1.4-Release-Notes.md)
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[2.1.3](./MaxScale-2.1.3-Release-Notes.md)
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[2.1.2](./MaxScale-2.1.2-Release-Notes.md)
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[2.1.1](./MaxScale-2.1.1-Release-Notes.md)
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[2.1.0](./MaxScale-2.1.0-Release-Notes.md)
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For any problems you encounter, please consider submitting a bug
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report at [Jira](https://jira.mariadb.org).
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## Changed Features
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### Schemarouter
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Starting with MaxScale 2.1.5, the _schemarouter_ will prioritize the current
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database over an explicit database if tables in the the current database are
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used in a query.
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## New Features
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### Schemarouter
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A new parameter for the _schemarouter_ was added that allows deterministic
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resolution of database mapping conflicts (i.e. the database exists on more than
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one backend server).
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The new `preferred_server` parameter takes a server name as its value. If a
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database mapping conflict occurs, the server given as the parameter will have
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preference. In practice, this means that databases on a central server can be
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replicated to the shards for doing JOINs but writes to the replicate database
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will still go to the central database.
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## Bug fixes
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[Here is a list of bugs fixed since the release of MaxScale 2.1.4.]
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(https://jira.mariadb.org/issues/?jql=project%20%3D%20MXS%20AND%20issuetype%20%3D%20Bug%20AND%20status%20%3D%20Closed%20AND%20fixVersion%20%3D%202.1.5)
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* [MXS-1310](https://jira.mariadb.org/browse/MXS-1310) schemarouter ignores local copy of duplicate schemas on JOIN
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## Known Issues and Limitations
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There are some limitations and known issues within this version of MaxScale.
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For more information, please refer to the [Limitations](../About/Limitations.md) document.
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## Packaging
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RPM and Debian packages are provided for the Linux distributions supported
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by MariaDB Enterprise.
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Packages can be downloaded [here](https://mariadb.com/resources/downloads).
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## Source Code
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The source code of MaxScale is tagged at GitHub with a tag, which is identical
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with the version of MaxScale. For instance, the tag of version X.Y.Z of MaxScale
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is maxscale-X.Y.Z.
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The source code is available [here](https://github.com/mariadb-corporation/MaxScale).
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