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https://issues.apache.org/jira/browse/SOLR-8621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15138782#comment-15138782
 ] 

ASF subversion and git services commented on SOLR-8621:
-------------------------------------------------------

Commit b052a8f93776ed7fef3c47764650566cfd9a358f in lucene-solr's branch 
refs/heads/branch_5x from [~cpoerschke]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=b052a8f ]

SOLR-8621: solr/CHANGES.txt 'Upgrading from 5.4' section now also mentions 
<mergeFactor> and <maxMergeDocs> deprecation, also useCompoundFile 
attribute/element.


> solrconfig.xml: deprecate/replace <mergePolicy> with <mergePolicyFactory>
> -------------------------------------------------------------------------
>
>                 Key: SOLR-8621
>                 URL: https://issues.apache.org/jira/browse/SOLR-8621
>             Project: Solr
>          Issue Type: Task
>            Reporter: Christine Poerschke
>            Assignee: Christine Poerschke
>         Attachments: SOLR-8621.patch, explicit-merge-auto-set.patch
>
>
> *<mergePolicyFactory> end-user benefits:*
> * Lucene's UpgradeIndexMergePolicy can be configured in Solr
> * (with SOLR-5730) Lucene's SortingMergePolicy can be configured in Solr
> * customisability: arbitrary merge policies including wrapping/nested merge 
> policies can be created and configured
> *(proposed) roadmap:*
> * solr 5.5 introduces <mergePolicyFactory> support
> * solr 5.5(\?) deprecates (but maintains) <mergePolicy> support
> * solr 6.0(\?) removes <mergePolicy> support 
> +work-in-progress git branch:+ 
> [master-solr-8621|https://github.com/apache/lucene-solr/tree/master-solr-8621]



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