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https://issues.apache.org/jira/browse/SOLR-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13973293#comment-13973293
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Erick Erickson commented on SOLR-3862:
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I'll add a slightly updated patch in a few. I added a bit more testing, and
included CHANGES.txt.
I think the regex question can be moved to another JIRA and I also think a new
removeregex is the cleanest way to distinguish between the two, we can debate
in a new JIRA...
Erick
> add "remove" as update option for atomically removing a value from a
> multivalued field
> --------------------------------------------------------------------------------------
>
> Key: SOLR-3862
> URL: https://issues.apache.org/jira/browse/SOLR-3862
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Affects Versions: 4.0-BETA
> Reporter: Jim Musil
> Assignee: Erick Erickson
> Attachments: SOLR-3862-2.patch, SOLR-3862-3.patch, SOLR-3862-4.patch,
> SOLR-3862.patch, SOLR-3862.patch, SOLR-3862.patch
>
>
> Currently you can atomically "add" a value to a multivalued field. It would
> be useful to be able to "remove" a value from a multivalued field.
> When you "set" a multivalued field to null, it destroys all values.
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