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https://issues.apache.org/jira/browse/SOLR-8621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15143602#comment-15143602
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Christine Poerschke commented on SOLR-8621:
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[~shaie] - thanks for your review comments on SOLR-5730. The first two of the
above three latest master commits for this SOLR-8621 ticket here are based on
that. If both those two and the third master commits are reasonable then I will
cherry-pick them to branch_5x and branch_5_5 tomorrow/Friday hopefully.
For the remaining test-related changes I have created SOLR-8674 'transition
from solr.tests.mergePolicy to solr.tests.mergePolicyFactory' ticket. So then
we are done with SOLR-8621 here I think - what do you think?
(The Solr Reference Guide changes still to be done separately and likely
directly in Confluence.)
> 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
> * (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:+
> * {color:red}WrapperMergePolicyFactory setter logic tweak/mini-bug (and test
> case){color} - Christine
> * Solr Reference Guide changes (directly in Confluence?)
> * changes to remaining solrconfig.xml
> ** solr/core/src/test-files/solr/collection1/conf - Christine
> ** solr/server/solr/configsets
> +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.
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