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https://issues.apache.org/jira/browse/LUCENE-8297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16465750#comment-16465750
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Michael McCandless commented on LUCENE-8297:
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+1, great tests :)
Maybe rename {{tryUpdate}} in the test to like {{doUpdate}} since it has a loop
and keeps trying until it wins?
> Add IW#tryUpdateDocValues(Reader, int, Fields...)
> -------------------------------------------------
>
> Key: LUCENE-8297
> URL: https://issues.apache.org/jira/browse/LUCENE-8297
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: 7.4, master (8.0)
> Reporter: Simon Willnauer
> Priority: Major
> Fix For: 7.4, master (8.0)
>
> Attachments: LUCENE-8297.patch
>
>
> IndexWriter can update doc values for a specific term but this might
> affect all documents containing the term. With tryUpdateDocValues
> users can update doc-values fields for individual documents. This allows
> for instance to soft-delete individual documents.
> The new method shares most of it's code with tryDeleteDocuments.
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