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https://issues.apache.org/jira/browse/SOLR-8621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christine Poerschke updated SOLR-8621:
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Description:
*<mergePolicyFactory> end-user benefits:*
* Lucene's UpgradeIndexMergePolicy can be configured in Solr
* Lucene's SortingMergePolicy can be configured in Solr (with SOLR-5730)
* 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-8668 in solr 6.0(\?) will remove <mergePolicy> support
was:
*<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 left-to-do summary:+
* Solr Reference Guide changes (directly in Confluence?)
* changes to remaining solrconfig.xml
** solr/core/src/test-files/solr/collection1/conf - in SOLR-8674
** solr/server/solr/configsets - master committed, branch_5x/branch_5_5
cherry-pick to follow
* WrapperMergePolicyFactory.getMergePolicyInstance method - master committed,
branch_5x/branch_5_5 cherry-pick to follow
* RandomForceMergePolicyFactory - master committed, branch_5x/branch_5_5
cherry-pick to follow
+open question:+
* Do we want to error if luceneMatchVersion >= 5.5 and deprecated
mergePolicy/mergeFactor/maxMergeDocs are used? See [~hossman]'s comment on Feb
1st. The code as-is permits mergePolicy irrespective of luceneMatchVersion, I
think.
> 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
> Fix For: 5.5, master
>
> Attachments: SOLR-8621-example_contrib_configs.patch,
> SOLR-8621-example_contrib_configs.patch, SOLR-8621.patch,
> explicit-merge-auto-set.patch
>
>
> *<mergePolicyFactory> end-user benefits:*
> * Lucene's UpgradeIndexMergePolicy can be configured in Solr
> * Lucene's SortingMergePolicy can be configured in Solr (with SOLR-5730)
> * 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-8668 in solr 6.0(\?) will remove <mergePolicy> support
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