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https://issues.apache.org/jira/browse/SOLR-10047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15975006#comment-15975006
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Keith Laban commented on SOLR-10047:
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Thanks Steve, I am able to reproduce this using this seed. The test commits
three documents and relies on them not being merged into a single segment to
verify the behavior of this patch works correctly. It seems like with this seed
the merge policy is merging these three segments.
What is the best way to setup this test to assure that no merges occur?
> Mismatched Docvalue segments cause exception in Sorting/Facting; Uninvert per
> segment
> -------------------------------------------------------------------------------------
>
> Key: SOLR-10047
> URL: https://issues.apache.org/jira/browse/SOLR-10047
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Keith Laban
> Assignee: Shalin Shekhar Mangar
> Fix For: 6.6, master (7.0)
>
>
> The configuration of UninvertingReader in SolrIndexSearch creates a global
> mapping for the directory for fields to uninvert. If docvalues are enabled on
> a field the creation of a new segment will cause the query to fail when
> faceting/sorting on the recently docvalue enabled field. This happens because
> the UninvertingReader is configured globally across the entire directory, and
> a single segment containing DVs for a field will incorrectly indicate that
> all segments contain DVs.
> This patch addresses the incorrect behavior by determining the fields to be
> uninverted on a per-segment basis.
> With the fix, it is still recommended that a reindexing occur as data loss
> will when a DV and non-DV segment are merged, SOLR-10046 addresses this
> behavior. This fix is to be a stop gap for the time between enabling
> docvalues and the duration of a reindex.
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