: How do I achieve, add if not there, fail if duplicate is found. I though
You can use the optimistic concurrency features to do this, by including a
_version_=-1 field value in the document.
this will instruct solr that the update should only be processed if the
document does not already
A follow up question on this (as it is kind of new functionality).
What happens if several documents are submitted and one of them fails
due to that? Do they get rolled back or only one?
Regards,
Alex.
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