Bruno Roustant created LUCENE-10097:
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Summary: Replace TreeMap use by HashMap when unnecessary
Key: LUCENE-10097
URL: https://issues.apache.org/jira/browse/LUCENE-10097
Project: Lucene - Core
Issue Type: Improvement
Reporter: Bruno Roustant
Assignee: Bruno Roustant
There are a couple of places where TreeMap is used although it could easily be
replaced by a HashMap with potentially a single sort. Sometimes it would bring
perf improvement (e.g. when TreeMap.entrySet() is called), other times it's
more for consistency to use a simpler HashMap if there is no strong need for a
TreeMap.
I saw other places where we have TODOs to see whether we can replace the
TreeMap, but when it is more complex, I'll prefer to open separate Jira issues.
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