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https://issues.apache.org/jira/browse/SOLR-6234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14649489#comment-14649489
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Cassandra Targett commented on SOLR-6234:
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[~mkhludnev]. First, thanks so much for proactively updating the Ref Guide with
your changes.
I hope you don't mind too much, but I modified your text in a few ways:
* The online version of the Ref Guide is always for the upcoming release of
Solr, and as such we don't spend a lot of time describing how features used to
work. While I understand that causes some confusion from time-to-time, a major
problem with the old Solr Wiki was the attempt to maintain documentation for
older versions of Solr along with the changes along the way. Personally, I find
no harm mentioning when a feature was introduced, but at that point our
convention is to remove documentation for the old behavior (unless, of course,
the section is describing how to migrate to the new behavior).
* With this general guideline, on the Uploading Data with Index Handlers page I
flipped the emphasis to note the need to use the score parameter when deleting
with the Join QP to avoid the error, and omitted the reference to 5.3 because
the guide is for 5.3 already, and the section we're pointing to says the param
was introduced in 5.3.
* I re-worded the text a bit to provide more context for a less-expert user.
* Standardized phrasings - i.e., "plain Solr" is usually referred to as
"standalone Solr".
> Scoring modes for query time join
> ----------------------------------
>
> Key: SOLR-6234
> URL: https://issues.apache.org/jira/browse/SOLR-6234
> Project: Solr
> Issue Type: New Feature
> Components: query parsers
> Affects Versions: 5.3
> Reporter: Mikhail Khludnev
> Assignee: Mikhail Khludnev
> Labels: features, patch, test
> Fix For: 5.3
>
> Attachments: SOLR-6234-javadocsfix.patch, SOLR-6234.patch,
> SOLR-6234.patch, SOLR-6234.patch, SOLR-6234.patch, SOLR-6234.patch,
> SOLR-6234.patch, SOLR-6234.patch, otherHandler.patch
>
>
> it adds ability to call Lucene's JoinUtil by specifying local param, ie
> \{!join score=...}.... It supports:
> - {{score=none|avg|max|total}} local param (passed as ScoreMode to JoinUtil)
> - -supports {{b=100}} param to pass {{Query.setBoost()}}- postponed till
> SOLR-7814.
> - -{{multiVals=true|false}} is introduced- YAGNI, let me know otherwise.
> - there is a test coverage for cross core join case.
> - so far it joins string and multivalue string fields (Sorted, SortedSet,
> Binary), but not Numerics DVs. follow-up LUCENE-5868
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