_id field duplication after data copy to new index

(Hardik) #1

Hi Community

We have one index with documents. We are planning to copy these documents to new index.
But we are worried about _id field.

Old index _id will be copied as it is to new index but what will happen when new document is indexed in new index? Is there a chance that new index generate same _id and document get updated instead of create?


(system) #2

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