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  1. Lucene - Core
  2. LUCENE-8699

Use fixed byte array in HeapPointWriter

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 8.x, 9.0
    • None
    • None
    • New

    Description

       

      {heapPointWriter}

       is always created with the same init size and max size. It might make sense to change the implementation to use a byte array instead of a growable structure as it has now. This seems to improve performance:

       

      Approach Index time (sec): Dev Index Time (sec): Base Index Time: Diff Force merge time (sec): Dev Force Merge time (sec): Base Force Merge Time: Diff Index size (GB): Dev Index size (GB): Base Index Size: Diff Reader heap (MB): Dev Reader heap (MB): Base Reader heap: Diff
      points 122.1s 147.0s -17% 51.9s 70.5s -26% 0.55 0.55 0% 1.57 1.57 0%
      shapes 211.1s 244.6s -14% 121.1s 135.0s -10% 1.29 1.29 0% 1.61 1.61 0%
      geo3d 154.2s 186.6s -17% 63.4s 82.8s -23% 0.75 0.75 0% 1.58 1.58 0%

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              ivera Ignacio Vera
              ivera Ignacio Vera
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