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https://issues.apache.org/jira/browse/SOLR-13320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16791318#comment-16791318
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Shalin Shekhar Mangar edited comment on SOLR-13320 at 3/13/19 5:35 AM:
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If the definition of duplicate is just having the same id then that can also be
done today using optimistic concurrency. Use {{_version_}} with a negative
value. See
https://lucene.apache.org/solr/guide/6_6/updating-parts-of-documents.html#UpdatingPartsofDocuments-OptimisticConcurrency
If duplicate depends on the content of the document then you need to use the
SignatureUpdateProcessorFactory
was (Author: shalinmangar):
If the definition of duplicate is just having the same id then that can also be
done today using optimistic concurrency. Use `_version_` with a negative value.
See
https://lucene.apache.org/solr/guide/6_6/updating-parts-of-documents.html#UpdatingPartsofDocuments-OptimisticConcurrency
If duplicate depends on the content of the document then you need to use the
SignatureUpdateProcessorFactory
> add a param ignoreDuplicates=true to updates to not overwrite existing docs
> ---------------------------------------------------------------------------
>
> Key: SOLR-13320
> URL: https://issues.apache.org/jira/browse/SOLR-13320
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Noble Paul
> Assignee: Noble Paul
> Priority: Major
>
> Updates should have an option to ignore duplicate documents and drop them if
> an option {{ignoreDuplicates=true}} is specified
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