If you remove the index, docs in Elasticsearch should be removed.
If not, there's something weird here.
Could you share curl commands you are running to delete the index?
You're right about oplog thing. Removing a database in mongodb won't remove the index in ES AFAIK.
May be after you removed the index, all documents are again fetched from the oplog by the river?
--
David 
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 26 juin 2013 à 10:42, Taras Petrytsyn pegasus.ua@gmail.com a écrit :
Hi David,
no actually I also removed index. And when I created newone, these documents were already in index 
as I mentioned before I think problem is in oplog, because as I understood, mongodb river doesn't work directly with data, but use oplog. And in case of calling drop() command documents that were dropped aren't identified by river as deleted. Interesting, that in case of calling remove() command (without parameters it removes all documents) threre is no problem.
Thank you,
Taras
Середа, 26 червня 2013 р. 11:30:18 UTC+3 користувач David Pilato написав:
You probably deleted the _river index not the index itself.
Removing an index removes all your documents (rm -rf behind the scene).
My 2 cents
--
David
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 26 juin 2013 à 10:17, Taras Petrytsyn pegas...@gmail.com a écrit :
Hi everyone,
I'm using elasticsearch mongodb river. After calling drop() on my collection all the documents that was dropped are still in index, even after removing of index and creating new one they still appears in results. I suspect that somehow drop() command not affect oplog file(which is used by mongodb river) that is why these documents are still in index. Are there any ideas how can I make index not "see" these dropped documents?
Thank you,
Taras
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