[jira] [Updated] (SOLR-13681) make Lucene's index sorting directly configurable in Solr

["Jan Høydahl (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-13681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jan Høydahl updated SOLR-13681:
-------------------------------
    Attachment: SOLR-13681-refguide-skel.patch

> make Lucene's index sorting directly configurable in Solr
> ---------------------------------------------------------
>
>                 Key: SOLR-13681
>                 URL: https://issues.apache.org/jira/browse/SOLR-13681
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Christine Poerschke
>            Priority: Minor
>         Attachments: SOLR-13681-refguide-skel.patch, SOLR-13681.patch
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> History/Background:
> * SOLR-5730 made Lucene's SortingMergePolicy and EarlyTerminatingSortingCollector configurable in Solr 6.0 or later.
> * LUCENE-6766 make index sorting a first-class citizen in Lucene 6.2 or later.
> Current status:
> * In Solr 8.2 use of index sorting is only available via configuration of a (top-level) merge policy that is a SortingMergePolicy and that policy's sort is then passed to the index writer config via the 
> {code}
> if (mergePolicy instanceof SortingMergePolicy) {
>   Sort indexSort = ((SortingMergePolicy) mergePolicy).getSort();
>   iwc.setIndexSort(indexSort);
> }
> {code}
> https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.2.0/solr/core/src/java/org/apache/solr/update/SolrIndexConfig.java#L241-L244 code path.
> Proposed change:
> * in-scope for this ticket: To add direct support for index sorting configuration in Solr.
> * out-of-scope for this ticket: deprecation and removal of SortingMergePolicy support



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