# How to upload data to dremio nessie iceberg table via apache arrow flight?

**URL:** <https://community.dremio.com/t/how-to-upload-data-to-dremio-nessie-iceberg-table-via-apache-arrow-flight/13216>\
**Category:** Apache Iceberg\
**Created:** [September 29, 2025, 9:07am UTC](https://community.dremio.com/t/how-to-upload-data-to-dremio-nessie-iceberg-table-via-apache-arrow-flight/13216 "2025-09-29T09:07:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ganbaatar](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/ganbaatar/32/6563_2.png) [@ganbaatar](https://community.dremio.com/u/ganbaatar)\
**Post date:** [September 29, 2025, 9:07am UTC](https://community.dremio.com/t/how-to-upload-data-to-dremio-nessie-iceberg-table-via-apache-arrow-flight/13216/1 "2025-09-29T09:07:07Z")

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how to upload data to dremio nessie iceberg table via apache arrow flight?

i have python polars dataframe but need to upload that data to my dremio server.

any way to do that without spark or javahome?

because using INSERT query is too slow and i dont have permission to install spark or javahome on my server.

or any other faster way to inject data to dremio nessie iceberg table?

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**Author:** ![Nisden](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/nisden/32/5453_2.png) [@Nisden](https://community.dremio.com/u/Nisden)\
**Post date:** [October 3, 2025, 10:28am UTC](https://community.dremio.com/t/how-to-upload-data-to-dremio-nessie-iceberg-table-via-apache-arrow-flight/13216/2 "2025-10-03T10:28:14Z")

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Fastest way we found is uploading our data as a file, and then using [COPY INTO | Dremio Documentation](https://docs.dremio.com/current/reference/sql/commands/apache-iceberg-tables/copy-into-table/)

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**Author:** ![balaji.ramaswamy](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/balaji.ramaswamy/32/843_2.png) [@balaji.ramaswamy](https://community.dremio.com/u/balaji.ramaswamy)\
**Post date:** [October 9, 2025, 8:40am UTC](https://community.dremio.com/t/how-to-upload-data-to-dremio-nessie-iceberg-table-via-apache-arrow-flight/13216/3 "2025-10-09T08:40:32Z")

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@ganbaatar If your table is already created and Iceberg on Nessie catalog, you should be able to see it in the Dremio UI under your sources. Also you should be able to insert into that table from Dremio either via UI or any other JDBC client or ODBC client (internally Dremio will only use Arrow flight)