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https://issues.apache.org/jira/browse/LUCENE-5680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14001296#comment-14001296
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Shai Erera commented on LUCENE-5680:
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bq. I think whats wrong here is that these methods on indexwriter need to use
Field api or something instead
I thought about it at some point, but I was worried it might suggest that you
can pass whatever Field, even if the method is called updateDocValues(). If we
have a DocValuesField base class for all DV field types, that might be better.
Of course, even if we go w/ a {{Field...}}, we can document that only NDV and
BDV fields are supported, and throw appropriate exception otherwise.
I wanted to avoid having must-read-the-jdocs API, and {{DocValuesUpdate}} is
the that _or something instead_ that you mentioned. Note that it's *NOT*
{{DocValuesFieldUpdate}} which is a heavier class, it's only
{{DocValuesUpdate}}, which record only the term, field and value. What do you
think?
> Allow updating multiple DocValues fields atomically
> ---------------------------------------------------
>
> Key: LUCENE-5680
> URL: https://issues.apache.org/jira/browse/LUCENE-5680
> Project: Lucene - Core
> Issue Type: New Feature
> Components: core/index
> Reporter: Shai Erera
> Assignee: Shai Erera
> Attachments: LUCENE-5680.patch, LUCENE-5680.patch
>
>
> This has come up on the list (http://markmail.org/message/2wmpvksuwc5t57pg)
> -- it would be good if we can allow updating several doc-values fields,
> atomically. It will also improve/simplify our tests, where today we index two
> fields, e.g. the field itself and a control field. In some multi-threaded
> tests, since we cannot be sure which updates came through first, we limit the
> test such that each thread updates a different set of fields, otherwise they
> will collide and it will be hard to verify the index in the end.
> I was working on a patch and it looks pretty simple to do, will post a patch
> shortly.
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