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  1. Lucene - Core
  2. LUCENE-4539

DocValues impls should read all headers up-front instead of per-directsource

    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: core/index
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      Currently, when DocValues opens, it just opens files. it doesnt read codec headers etc.

      Instead we read these every single time a directsource opens.

      I think it should work like PostingsReaders: e.g. the PackedInts impl would read its versioning info and codec headers and creating a new Direct impl should be a IndexInput.clone() + getDirectReaderNoHeader().

      Today its much more costly.

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            • Assignee:
              Unassigned
              Reporter:
              rcmuir Robert Muir
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              Dates

              • Created:
                Updated: