# Reindexing data mongodb-es **URL:** \ **Category:** Elasticsearch\ **Created:** [September 27, 2012, 9:24pm UTC](https://discuss.elastic.co/t/reindexing-data-mongodb-es/9177 "2012-09-27T21:24:21Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![coys](https://avatars.discourse-cdn.com/v4/letter/c/eb8c5e/32.png) [@coys](https://discuss.elastic.co/u/coys)\ **Post date:** [September 27, 2012, 9:24pm UTC](https://discuss.elastic.co/t/reindexing-data-mongodb-es/9177/1 "2012-09-27T21:24:21Z")
Hello, sorry if I've asked a silly question but I can't figure out the solution. I have data stored in mongodb and the collections are mapped to es indices using richardwilly's plugin. However, a couple of my indices are messed up (due to which not all the data that I expect to see is in es (its still in mongodb)). I tried creating a dummy index on dummy data and I expect that after re-indexing I will now see this data in es. The problem seems to be that the mongo river operates on the oplog and after I delete the index, after inserting the next first new document I want to see the other thousands of documents in mongodb to automatically now be visible in es. However, I only see the documents that I inserted after deleting and recreating the indexes. The other 1000's of documents are still visible in mongo but not in es. I did a small experiment and I saw that if I actually reinserted the 500 documents, they are then visible in elasticsearch(if the index is right to allow them all in). Can you please tell me how I can make the data in mongodb visible in es after I recreate the index without having to delete and reinsert as I cannot do this. Do I need to replay the oplog or is there another approach that you can suggest such that I can get this data into es without deleting and reinserting? Thanks! -- ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [September 28, 2012, 12:32am UTC](https://discuss.elastic.co/t/reindexing-data-mongodb-es/9177/2 "2012-09-28T00:32:41Z")
Did you try to remove and create again the river itself? -- David 😉 Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs Le 27 sept. 2012 à 23:24, coys [gautam719@gmail.com](mailto:gautam719@gmail.com) a écrit : Hello, sorry if I've asked a silly question but I can't figure out the solution. I have data stored in mongodb and the collections are mapped to es indices using richardwilly's plugin. However, a couple of my indices are messed up (due to which not all the data that I expect to see is in es (its still in mongodb)). I tried creating a dummy index on dummy data and I expect that after re-indexing I will now see this data in es. The problem seems to be that the mongo river operates on the oplog and after I delete the index, after inserting the next first new document I want to see the other thousands of documents in mongodb to automatically now be visible in es. However, I only see the documents that I inserted after deleting and recreating the indexes. The other 1000's of documents are still visible in mongo but not in es. I did a small experiment and I saw that if I actually reinserted the 500 documents, they are then visible in elasticsearch(if the index is right to allow them all in). Can you please tell me how I can make the data in mongodb visible in es after I recreate the index without having to delete and reinsert as I cannot do this. Do I need to replay the oplog or is there another approach that you can suggest such that I can get this data into es without deleting and reinserting? Thanks! -- -- ---
**Author:** ![coys](https://avatars.discourse-cdn.com/v4/letter/c/eb8c5e/32.png) [@coys](https://discuss.elastic.co/u/coys)\ **Post date:** [September 28, 2012, 4:43am UTC](https://discuss.elastic.co/t/reindexing-data-mongodb-es/9177/3 "2012-09-28T04:43:33Z")
Thanks a lot David! That worked 🙂 > Hello, sorry if I've asked a silly question but I can't figure out the > solution. > I have data stored in mongodb and the collections are mapped to es > indices using richardwilly's plugin. However, a couple of my indices > are messed up (due to which not all the data that I expect to see is > in es (its still in mongodb)). I tried creating a dummy index on dummy > data and I expect that after re-indexing I will now see this data in > es. > > The problem seems to be that the mongo river operates on the oplog and > after I delete the index, after inserting the next first new document > I want to see the other thousands of documents in mongodb to > automatically now be visible in es. However, I only see the documents > that I inserted after deleting and recreating the indexes. The other > 1000's of documents are still visible in mongo but not in es. > > I did a small experiment and I saw that if I actually reinserted the > 500 documents, they are then visible in elasticsearch(if the index is > right to allow them all in). Can you please tell me how I can make the > data in mongodb visible in es after I recreate the index without > having to delete and reinsert as I cannot do this. Do I need to replay > the oplog or is there another approach that you can suggest such that > I can get this data into es without deleting and reinserting? > > Thanks! > > -- -- ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 3:11am UTC](https://discuss.elastic.co/t/reindexing-data-mongodb-es/9177/4 "2017-07-06T03:11:01Z")