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Posted to issues@lucene.apache.org by "Bruno Roustant (Jira)" <ji...@apache.org> on 2021/10/04 07:13:00 UTC

[jira] [Resolved] (LUCENE-10097) Replace TreeMap use by HashMap when unnecessary

     [ https://issues.apache.org/jira/browse/LUCENE-10097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bruno Roustant resolved LUCENE-10097.
-------------------------------------
    Resolution: Won't Do

> 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
>            Priority: Major
>          Time Spent: 4h 10m
>  Remaining Estimate: 0h
>
> 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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