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https://issues.apache.org/jira/browse/LUCENE-7581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15736610#comment-15736610
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ASF subversion and git services commented on LUCENE-7581:
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Commit 4efbde4e76277f364952866c071bb953ca2be070 in lucene-solr's branch
refs/heads/master from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=4efbde4 ]
LUCENE-7581: don't allow updating a doc values field if it's used in the index
sort
> IndexWriter#updateDocValues can break index sorting
> ---------------------------------------------------
>
> Key: LUCENE-7581
> URL: https://issues.apache.org/jira/browse/LUCENE-7581
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Ferenczi Jim
> Attachments: LUCENE-7581.patch, LUCENE-7581.patch
>
>
> IndexWriter#updateDocValues can break index sorting if it is called on a
> field that is used in the index sorting specification.
> TestIndexSorting has a test for this case: #testConcurrentDVUpdates
> but only L1 merge are checked. Any LN merge would fail the test because the
> inner sort of the segment is not re-compute during/after DV updates.
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