# Dremio - Cdata cosmos mongodb Data Read

**URL:** <https://community.cdata.com/t/dremio-cdata-cosmos-mongodb-data-read/927>\
**Category:** CData Drivers\
**Tags:** question, mongodb, jdbc, azure-cosmos-db\
**Created:** [October 30, 2024, 12:40pm UTC](https://community.cdata.com/t/dremio-cdata-cosmos-mongodb-data-read/927 "2024-10-30T12:40:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Amit\_Sharma](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@Amit\_Sharma](https://community.cdata.com/u/Amit_Sharma)\
**Post date:** [October 30, 2024, 12:40pm UTC](https://community.cdata.com/t/dremio-cdata-cosmos-mongodb-data-read/927/1 "2024-10-30T12:40:04Z")

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Hi Community,

I have installed Cdata cosmos mongodb driver for a poc and i am able to connect Azure Cosmos Mongo db. In jdbc ui inferface and in&nbsp;data model tab i am able to see the collections along with data. but when i try to query the same from dremio i get error&nbsp;_ **"unknown operator: $readPreference”** _. can someone help me on this issue?

Regards

Amit