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  1. Lucene - Core
  2. LUCENE-6233

CheckIndex is dog slow when checking term vectors

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 5.1, 6.0
    • Component/s: None
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      I'm working on a test that creates a biggish index and I noticed the CheckIndex takes a surprisingly long time to check term vectors.

      I profiled it and uncovered that we spend a lot of time (not sure this explains all of it) in Terms.getMin/getMax. Since CompressingTermVectorsReader doesn't impl these methods efficiently (which is fine), we fallback to super's impl, which does a digit-by-digit binary search using seekCeil.

      But for TVs this sometimes results in a linear scan.

      I think CheckIndex should not check Terms.getMin/Max for TVs?

        Attachments

        1. LUCENE-6233.patch
          14 kB
          Robert Muir
        2. LUCENE-6223.patch
          33 kB
          Robert Muir
        3. LUCENE-6233.patch
          13 kB
          Michael McCandless

          Activity

            People

            • Assignee:
              mikemccand Michael McCandless
              Reporter:
              mikemccand Michael McCandless
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              Dates

              • Created:
                Updated:
                Resolved: