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https://issues.apache.org/jira/browse/LUCENE-9935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17345789#comment-17345789
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ASF subversion and git services commented on LUCENE-9935:
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Commit efdc43fee18e33c664a22df97ef6cd40912af20d in lucene-solr's branch
refs/heads/branch_8x from Nhat Nguyen
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=efdc43f ]
LUCENE-9935: Enable bulk merge for stored fields with index sort
This commit enables bulk-merges (i.e., raw chunk copying) for stored
fields when index sort is enabled.
> Bulk merges for stored fields when index sorting is enabled
> -----------------------------------------------------------
>
> Key: LUCENE-9935
> URL: https://issues.apache.org/jira/browse/LUCENE-9935
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Nhat Nguyen
> Priority: Minor
> Fix For: 9.0
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> Today stored fields disable bulk merges entirely when index sorting is
> enabled. However when sorting by low-cardinality fields or when the index
> sort is correlated with the order in which documents get indexed, we could
> likely still have efficient bulk merges.
> For instance, if you are merging two segments that are sorted on a field that
> can only take 2 values, one could bulk merge the first half of the first
> segment, then the first half of the second segment, then the second half of
> the first segment, and finally the second half of the second segment.
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