# Elasticsearch-river-mongodb **URL:** \ **Category:** Elasticsearch\ **Created:** [December 2, 2014, 5:43am UTC](https://discuss.elastic.co/t/elasticsearch-river-mongodb/21022 "2014-12-02T05:43:43Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![priyanka\_nathani](https://avatars.discourse-cdn.com/v4/letter/p/ce73a5/32.png) [@priyanka\_nathani](https://discuss.elastic.co/u/priyanka_nathani)\ **Post date:** [December 2, 2014, 5:43am UTC](https://discuss.elastic.co/t/elasticsearch-river-mongodb/21022/1 "2014-12-02T05:43:43Z")
Hello i have a question for the syncronization . My ES collection has 5 colums whereas mongo collection has 3 . but during the sync the addtional 2 colums in ES is gone. Any way to neglect the addtional column during sync ? the other way round is poosible in mongo as filter in river. -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/2e040413-fe33-4b48-bf89-0e0ad3a680a4%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/2e040413-fe33-4b48-bf89-0e0ad3a680a4%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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, 12:46am UTC](https://discuss.elastic.co/t/elasticsearch-river-mongodb/21022/2 "2017-07-06T00:46:41Z")
Closed on July 6, 2017, 12:46am UTC