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  1. Kudu
  2. KUDU-3158

Document recommendation to use a dedicated SSD for the WAL

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    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • documentation
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    Description

      It is a common deployment best practice to place the WAL on its own SSD to maximize ingest throughput in a Kudu cluster. However, we don't clearly document that recommendation in the places users would commonly look for it. 

      It is mentioned somewhat in the FAQ:
      https://kudu.apache.org/faq.html#how-does-kudu-store-its-data-is-the-underlying-data-storage-readable-without-going-through-kudu

      But it should probably be mentioned in these places:
      https://kudu.apache.org/docs/installation.html#prerequisites_and_requirements
      https://kudu.apache.org/docs/configuration.html#directory_configuration
      https://kudu.apache.org/docs/scaling_guide.html

      Alternatively a hardware/deployment guide might be useful, but that is a larger undertaking.
       

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            Unassigned Unassigned
            granthenke Grant Henke
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              Created:
              Updated: