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https://issues.apache.org/jira/browse/SOLR-17310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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wei wang updated SOLR-17310:
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Component/s: search
> Configurable LeafSorter to customize segment search order
> ---------------------------------------------------------
>
> Key: SOLR-17310
> URL: https://issues.apache.org/jira/browse/SOLR-17310
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: search
> Reporter: wei wang
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Lucene's IndexWriterConfig provides the option to sort leaf readers when a
> custom LeafSorter is provided.
> [https://github.com/apache/lucene/blob/main/lucene/core/src/java/org/apache/lucene/index/IndexWriterConfig.java#L494]
>
> The functionality is currently not directly exposed in Solr. One use case is
> in early termination, we would like to search the more recent updated
> segments first. The SegmentTimeLeafSorter sorts the LeafReaders by time
> stamp, so that recent NRT segments can be traversed first. The feature is
> enabled by adding the *segmentSort* config in solrconfig.xml. Without the
> config, no sorting is applied by default.
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