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https://issues.apache.org/jira/browse/SOLR-11267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Noble Paul resolved SOLR-11267.
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Resolution: Fixed
Fix Version/s: master (8.0)
> Add support for "add-distinct" atomic update operation
> ------------------------------------------------------
>
> Key: SOLR-11267
> URL: https://issues.apache.org/jira/browse/SOLR-11267
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Ishan Chattopadhyaya
> Assignee: Noble Paul
> Priority: Blocker
> Fix For: 7.3, master (8.0)
>
> Attachments: SOLR-11267.patch, SOLR-11267.patch, SOLR-11267.patch
>
>
> Often, a multivalued field is used as a set of values. Since multivalued
> fields are more like lists than sets, users do two consecutive operations,
> remove and add, to insert an element into the field and also maintain the
> set's property of only having unique elements.
> Proposing a new single operation, called "add-distinct" (which essentially
> means "add-if-doesn't exist") for this.
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