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https://issues.apache.org/jira/browse/LUCENE-9245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bruno Roustant updated LUCENE-9245:
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Description: Reduce AutomatonTermsEnum memory usage. It uses a long[] with
size = number of automaton states, which may be large. Instead we can reduce to
short[] with slightly faster performance. (I tried a FixedBitSet, but it
requires to clear and this impacts negatively performance) (was: Reduce
AutomatonTermsEnum memory usage. It uses a long[] with size = number of
automaton states, which may be large. Instead we can reduce to short[] with
slightly faster performance. (I tried a FixedBitSet, but it requires to clear
and this impacts negatively performance)
Operations.getCommonPrefixBytesRef() is used by CompiledAutomaton to compute
the common suffix for all automatons with infinite language. It can be
optimized with lazy structure creation and less operations. This gave some %
improvement in my benchmarks (LUCENE-9237).)
Summary: Reduce AutomatonTermsEnum memory usage (was: Optimize
AutomatonTermsEnum and Operations.getCommonPrefixBytesRef)
> Reduce AutomatonTermsEnum memory usage
> --------------------------------------
>
> Key: LUCENE-9245
> URL: https://issues.apache.org/jira/browse/LUCENE-9245
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Bruno Roustant
> Assignee: Bruno Roustant
> Priority: Minor
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> Reduce AutomatonTermsEnum memory usage. It uses a long[] with size = number
> of automaton states, which may be large. Instead we can reduce to short[]
> with slightly faster performance. (I tried a FixedBitSet, but it requires to
> clear and this impacts negatively performance)
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