Lucene - Core
  1. Lucene - Core
  2. LUCENE-2136

MultiReader should not use PQ for its Term/sEnum if it has only 1 reader

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.0-ALPHA
    • Component/s: core/index
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      Related to LUCENE-2130....

      Even though we've switched to segment-based searching, there are still times when the Term/sEnum is used against the top-level reader. I think Solr does this, and from LUCENE-2130, certain rewrite modes of MTQ will do this as well.

      Currently, on an optimized index, MTQ is still using a PQ to present the terms, which is silly because this just adds a sizable amount of overhead. In such cases we should simply delecate to the single segment.

      Note that the single segment can have deletions, and we should still delegate. Ie, the index need not be optimized, just have a single segment.

      1. LUCENE-2136-flex.patch
        3 kB
        Michael McCandless
      2. LUCENE-2136-trunk.patch
        4 kB
        Michael McCandless

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          • Assignee:
            Michael McCandless
            Reporter:
            Michael McCandless
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            • Created:
              Updated:
              Resolved:

              Development