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HDDS-14433. [Docs] Advanced Ratis configuration. #9637

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szetszwo merged 3 commits into from
Jan 16, 2026
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HDDS-14433. [Docs] Advanced Ratis configuration. #9637

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HDDS-14433. [Website v2] [Docs] [Core Concepts] Ratis configurations.
szetszwo Jan 14, 2026
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Remove Recon.
szetszwo Jan 15, 2026
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Added examples
szetszwo Jan 16, 2026
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16 changes: 16 additions & 0 deletions hadoop-hdds/docs/content/feature/multi-raft-support.md
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Expand Up @@ -105,6 +105,22 @@ Ratis handles concurrent logs per node.
The Ratis pipelines will be distributed accordingly.
- Be cautious with very high pipeline counts due to memory/CPU overhead.

## Advanced Ratis Configuration

Any Ratis configuration properties can be set using a corresponding prefix.
The following table shows the prefixes in each Ozone component.

| Ozone Components | Configuration Prefixes |
|---------------------------------|-------------------------|
| Ozone Manager (OM) | `ozone.om.ha` |
| Storage Container Manager (SCM) | `ozone.scm.ha` |
| Recon | `ozone.recon.scmconfig` |
| Datanode | `hdds.ratis` |
| Ozone Client | `hdds.ratis` |
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@jojochuang jojochuang Jan 15, 2026

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please add an example. For example: hdds.ratis.raft.server.log.appender.buffer.byte-limit is for raft.server.log.appender.buffer.byte-limit in ozone client.

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@szetszwo szetszwo Jan 16, 2026 •
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Thanks for reviewing this! Just pushed a commit to add the example from #8668 (comment)


See also [Apache Ratis configuration
documentation](https://github.com/apache/ratis/blob/ratis-3.2.1/ratis-docs/src/site/markdown/configurations.md).

## Limitations
- Global configuration: cannot set per-node limits
- Requires restart after changing storage dirs
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