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https://issues.apache.org/jira/browse/SOLR-12699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16675704#comment-16675704
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ASF subversion and git services commented on SOLR-12699:
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Commit 7ddaff6f838df7054318856de486065ea88f7715 in lucene-solr's branch
refs/heads/branch_7x from [~cpoerschke]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=7ddaff6 ]
SOLR-12699: Make contrib/ltr LTRScoringModel immutable and cache its hashCode.
(Stanislav Livotov, Edward Ribeiro, Christine Poerschke)
> make LTRScoringModel immutable (to allow hashCode caching)
> ----------------------------------------------------------
>
> Key: SOLR-12699
> URL: https://issues.apache.org/jira/browse/SOLR-12699
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Components: contrib - LTR
> Reporter: Stanislav Livotov
> Priority: Major
> Attachments: SOLR-12699.patch, SOLR-12699.patch, SOLR-12699.patch,
> SOLR-12699.patch
>
>
> [~slivotov] wrote in SOLR-12688:
> bq. ... LTRScoringModel was a mutable object. It was leading to the
> calculation of hashcode on each query, which in turn can consume a lot of
> time ... So I decided to make LTRScoringModel immutable and cache hashCode
> calculation. ...
> (Please see SOLR-12688 description for overall context and analysis results.)
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