Sequence numbers unique?

[ljcollins25 (Lance Collins)]

Are sequence numbers unique within a shard or is the pair (primary term, sequence number) the only thing guaranteed to be unique?

[ljcollins25 (Lance Collins)]

Moving this question to a larger discussion on why this is important for me.

Stored filters using sequence numbers

I am working on a set of changes to ElasticSearch which allow storing a filter for documents matching a query using sequence numbers. I would like to get feedback on my approach. This is implemented with these changes: Add special query field type and _stored_filter meta field whose content is a query. When a document with _stored_filter_query is encountered another field is added which stores the sorted sequence numbers for the documents matching the query. Introduce stored_filter_query whic…