Ignacio Vera created LUCENE-8699:
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Summary: Use fixed byte array in HeapPointWriter
Key: LUCENE-8699
URL: https://issues.apache.org/jira/browse/LUCENE-8699
Project: Lucene - Core
Issue Type: Improvement
Reporter: Ignacio Vera
{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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