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Christine Poerschke commented on SOLR-8621: ------------------------------------------- bq. Is this simply a rename of the XML element name (from <mergePolicy> to <mergePolicyFactory>) or is there some other user-visible feature enhancement or change? Good question. This is more-or-less-but-not-quite a simple rename (see illustration below). The end-user benefit of the change is to make policies such as Lucene's UpgradeIndexMergePolicy configurable in Solr (see illustration above). The <mergePolicyFactory> element will also encompass all merge policy related parameters whereas currently <mergeFactor> and <maxMergeDocs> elements (applicable for some but not all merge policies) can be 'alongside' the <mergePolicy> element. *existing/deprecated:* {code} <mergeFactor>12</mergeFactor> <maxMergeDocs>345</maxMergeDocs> <mergePolicy class="..." /> <str name="abc">def</str> </mergePolicy> {code} *replacement:* {code} <mergePolicyFactory class="...Factory"> <int name="mergeFactor">12</int> <int name="maxMergeDocs">345</int> <str name="abc">def</str> </mergePolicyFactory> {code} > 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 > > *<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 > *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] -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org