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https://issues.apache.org/jira/browse/LUCENE-7064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15179864#comment-15179864
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ASF subversion and git services commented on LUCENE-7064:
---------------------------------------------------------

Commit 1407077092f3b6d50fbecf07eda3f739f135455d in lucene-solr's branch 
refs/heads/branch_6_0 from [~lvl]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=1407077 ]

LUCENE-7064: Split MultiPhraseQuery into an immutable class and a Builder

This closes #19


> Make MultiPhraseQuery immutable
> -------------------------------
>
>                 Key: LUCENE-7064
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7064
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>            Reporter: Luc Vanlerberghe
>            Priority: Minor
>             Fix For: master, 6.0
>
>
> See LUCENE-6531
> Mutable queries are an issue for automatic filter caching since modifying a 
> query after it has been put into the cache will corrupt the cache. We should 
> make all queries immutable (up to the boost) to avoid this issue.



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