# Dremio Cloud **URL:** https://community.dremio.com/c/dremio-cloud/9.md [Latest](https://community.dremio.com/latest.md) · [Categories](https://community.dremio.com/categories.md) --- ## [About the Dremio Cloud category](https://community.dremio.com/t/about-the-dremio-cloud-category/8616)
**Author:** [@balaji.ramaswamy](https://community.dremio.com/u/balaji.ramaswamy)\ **Replies:** 0\ **Last updated:** [January 18, 2022, 8:42pm UTC](https://community.dremio.com/t/about-the-dremio-cloud-category/8616 "2022-01-18T20:42:45Z")
This category is for Dremio Cloud related questions. Dremio Cloud is our fully-managed, cloud native service. --- ## [stsTagSession error on first query execution - suceeds in second attempt](https://community.dremio.com/t/ststagsession-error-on-first-query-execution-suceeds-in-second-attempt/13393)
**Author:** [@DnyaneshwarD](https://community.dremio.com/u/DnyaneshwarD)\ **Replies:** 10\ **Last updated:** [October 15, 2026, 6:33am UTC](https://community.dremio.com/t/ststagsession-error-on-first-query-execution-suceeds-in-second-attempt/13393 "2026-10-15T06:33:10Z")
Hello there, Since last few days we are getting following error for every table in Dremio when we execute the query first time. Strangely it works fine when executed again: Credential verification failed. arn:aws:sts::… --- ## [Handling schema inference and nested JSON issues from web traffic logs in S3](https://community.dremio.com/t/handling-schema-inference-and-nested-json-issues-from-web-traffic-logs-in-s3/13395)
**Author:** [@zehal0674](https://community.dremio.com/u/zehal0674)\ **Replies:** 0\ **Last updated:** [September 29, 2026, 4:56pm UTC](https://community.dremio.com/t/handling-schema-inference-and-nested-json-issues-from-web-traffic-logs-in-s3/13395 "2026-09-29T16:56:30Z")
Hello everyone, I am currently setting up an analytical pipeline in Dremio to analyze user session metrics and API payload dumps collected from this website. We sync the raw incoming event logs into an AWS S3 bucket in J… --- ## [Dremio Cloud (next-gen): privileges not inherited from project level, and GRANT OWNERSHIP on a UDF has no effect](https://community.dremio.com/t/dremio-cloud-next-gen-privileges-not-inherited-from-project-level-and-grant-ownership-on-a-udf-has-no-effect/13387)
**Author:** [@Mauricio\_Macri](https://community.dremio.com/u/Mauricio_Macri)\ **Replies:** 2\ **Last updated:** [September 11, 2026, 2:55pm UTC](https://community.dremio.com/t/dremio-cloud-next-gen-privileges-not-inherited-from-project-level-and-grant-ownership-on-a-udf-has-no-effect/13387 "2026-09-11T14:55:00Z")
Hello everyone, Im having two permission issues on Dremio Cloud (next-gen projects) — I’d like to know if they’re expected behavior or bugs. 1) Privileges don’t cascade down the hierarchy. When I grant full privileges … --- ## [Dremio Cloud (next-gen): User having issues when starting query](https://community.dremio.com/t/dremio-cloud-next-gen-user-having-issues-when-starting-query/13394)
**Author:** [@Mauricio\_Macri](https://community.dremio.com/u/Mauricio_Macri)\ **Replies:** 0\ **Last updated:** [September 11, 2026, 2:40pm UTC](https://community.dremio.com/t/dremio-cloud-next-gen-user-having-issues-when-starting-query/13394 "2026-09-11T14:40:32Z")
Hello! One of our client’s user is having a issue where he, after starting a query, Dremio is giving an unexpected error: The user already tried restarting her computer + accessing Dremio in a anonymous tab in her b… --- ## [Correct warehouse value for the Iceberg REST Catalog endpoint on a trial project](https://community.dremio.com/t/correct-warehouse-value-for-the-iceberg-rest-catalog-endpoint-on-a-trial-project/13381)
**Author:** [@LewG777](https://community.dremio.com/u/LewG777)\ **Replies:** 0\ **Last updated:** [August 3, 2026, 9:39pm UTC](https://community.dremio.com/t/correct-warehouse-value-for-the-iceberg-rest-catalog-endpoint-on-a-trial-project/13381 "2026-08-03T21:39:46Z")
Title: Correct warehouse value for the Iceberg REST Catalog endpoint on a trial project Hi all, I’m evaluating Dremio Cloud for connecting a third-party data-governance tool to Open Catalog via the Iceberg REST Catalog… --- ## [Dremio Cloud MCP issues - Claude](https://community.dremio.com/t/dremio-cloud-mcp-issues-claude/13366)
**Author:** [@Mauricio\_Macri](https://community.dremio.com/u/Mauricio_Macri)\ **Replies:** 4\ **Last updated:** [July 20, 2026, 4:51pm UTC](https://community.dremio.com/t/dremio-cloud-mcp-issues-claude/13366 "2026-07-20T16:51:27Z")
We are having issues when trying to use the Dremio Cloud MCP integration with Claude. We are following the documentation, step-by-step. When we get to the final step - Login into dremio for the URL Callback and authori… --- ## [Addional nodes scaled down very quickly](https://community.dremio.com/t/addional-nodes-scaled-down-very-quickly/13330)
**Author:** [@patrickkooman](https://community.dremio.com/u/patrickkooman)\ **Replies:** 2\ **Last updated:** [May 19, 2026, 9:55am UTC](https://community.dremio.com/t/addional-nodes-scaled-down-very-quickly/13330 "2026-05-19T09:55:55Z")
Hi, Two weeks ago we enabled scaling into a second node because we noticed a 100% peak quite often on our single node. However we are seeing issues with this setup. As you can see in one my uploaded images, scaling dow… --- ## [Tenant context should not be null when using regular JDBC statements](https://community.dremio.com/t/tenant-context-should-not-be-null-when-using-regular-jdbc-statements/13287)
**Author:** [@dremmer](https://community.dremio.com/u/dremmer)\ **Replies:** 3\ **Last updated:** [February 25, 2026, 11:54pm UTC](https://community.dremio.com/t/tenant-context-should-not-be-null-when-using-regular-jdbc-statements/13287 "2026-02-25T23:54:44Z")
Whenever I use regular JDBC statements (as in: not prepared statements), the statements fail to run. A simple \`INSERT INTO “sometable” SELECT col1, col2 FROM “anothertable”\` fails and the raw profile has something along … --- ## [Error when using JDBC to access dremio](https://community.dremio.com/t/error-when-using-jdbc-to-access-dremio/13319)
**Author:** [@dremmer](https://community.dremio.com/u/dremmer)\ **Replies:** 4\ **Last updated:** [February 25, 2026, 12:41pm UTC](https://community.dremio.com/t/error-when-using-jdbc-to-access-dremio/13319 "2026-02-25T12:41:36Z")
Hi, using the arrow flight sql JDBC driver yields mixed results for me. The crux of my issue seems to be that wile PreparedStatement.executeQuery() works fine, its sibling PreparedStatement.executeUpdate() doesn’t. The … --- ## [Dremio schema doesn't appear in the Superset UI dropdown](https://community.dremio.com/t/dremio-schema-doesnt-appear-in-the-superset-ui-dropdown/13321)
**Author:** [@usual1suspect2](https://community.dremio.com/u/usual1suspect2)\ **Replies:** 0\ **Last updated:** [February 19, 2026, 3:41pm UTC](https://community.dremio.com/t/dremio-schema-doesnt-appear-in-the-superset-ui-dropdown/13321 "2026-02-19T15:41:47Z")
I’m running Superset locally in Docker and connecting it to Dremio Cloud using the Flight SQL driver. The connection works - in SQL Lab I can successfully query Dremio system tables and even run: SELECT \* FROM "wire".… --- ## [Cannot login to cloud web interface](https://community.dremio.com/t/cannot-login-to-cloud-web-interface/13303)
**Author:** [@patrickkooman](https://community.dremio.com/u/patrickkooman)\ **Replies:** 2\ **Last updated:** [January 22, 2026, 7:27pm UTC](https://community.dremio.com/t/cannot-login-to-cloud-web-interface/13303 "2026-01-22T19:27:52Z")
I wanted to raise a support ticket, but can’t login to that page either. Problem is that since today I cannot login to both of the cloud accounts I maintain for a client. A colleague has the same for another of our clie… --- ## [ERROR: ExecutionSetupException: One or more nodes lost connectivity during query](https://community.dremio.com/t/error-executionsetupexception-one-or-more-nodes-lost-connectivity-during-query/13247)
**Author:** [@ricardolg](https://community.dremio.com/u/ricardolg)\ **Replies:** 1\ **Last updated:** [November 4, 2025, 7:11am UTC](https://community.dremio.com/t/error-executionsetupexception-one-or-more-nodes-lost-connectivity-during-query/13247 "2025-11-04T07:11:45Z")
I am using Dremio Cloud in AWS with the default CF template. When I use Dagster to run multiple jobs using Dremio, I often get the ERROR: ExecutionSetupException: One or more nodes lost connectivity during query. It happ… --- ## [Assistance Required – Error Accessing Internal Source \_\_accelerator on EC2 Dremio Instance](https://community.dremio.com/t/assistance-required-error-accessing-internal-source-accelerator-on-ec2-dremio-instance/13240)
**Author:** [@skylineit](https://community.dremio.com/u/skylineit)\ **Replies:** 1\ **Last updated:** [October 28, 2025, 4:42am UTC](https://community.dremio.com/t/assistance-required-error-accessing-internal-source-accelerator-on-ec2-dremio-instance/13240 "2025-10-28T04:42:44Z")
Hi, we are using Dremio Cloud and we used the AWS CloudFormation template to configure the setup: EC2 instance and S3 bucket. We are able to query our database through dremio without issue and for a short period we also … --- ## [Validation Error: Failure getting source \[\_\_resultsCacheStore\]](https://community.dremio.com/t/validation-error-failure-getting-source-resultscachestore/13221)
**Author:** [@skylineit](https://community.dremio.com/u/skylineit)\ **Replies:** 5\ **Last updated:** [October 28, 2025, 4:28am UTC](https://community.dremio.com/t/validation-error-failure-getting-source-resultscachestore/13221 "2025-10-28T04:28:40Z")
We’re testing reflections and we sucessfully created a raw reflection on a view that queries the NYC-weather table from the SampleDB. However, when we query the view, it says that it is being accelerated by the reflectio… --- ## [Cleanup failed: engine ARCTIC\_OPTIMIZATION\_ENGINE did not start (no active replicas)](https://community.dremio.com/t/cleanup-failed-engine-arctic-optimization-engine-did-not-start-no-active-replicas/13219)
**Author:** [@barbara.brito](https://community.dremio.com/u/barbara.brito)\ **Replies:** 1\ **Last updated:** [October 8, 2025, 5:04pm UTC](https://community.dremio.com/t/cleanup-failed-engine-arctic-optimization-engine-did-not-start-no-active-replicas/13219 "2025-10-08T17:04:00Z")
Hello, I’m having trouble with table cleanup, with the following error: was canceled as the \_ARCTIC\_OPTIMIZATION\_ENGINE\_ engine did not start. No active engine replicas available. I configured an engine called \_ARCTIC… --- ## [Question about Iceberg table management in S3 with Dremio](https://community.dremio.com/t/question-about-iceberg-table-management-in-s3-with-dremio/13198)
**Author:** [@sclee01](https://community.dremio.com/u/sclee01)\ **Replies:** 1\ **Last updated:** [September 5, 2025, 5:29pm UTC](https://community.dremio.com/t/question-about-iceberg-table-management-in-s3-with-dremio/13198 "2025-09-05T17:29:47Z")
Hi Team, I have successfully configured AWS IAM with Dremio and verified that queries executed via the Dremio UI can create and insert data into Iceberg tables stored in my S3 bucket. As I plan to use this setup at a p… --- ## [Dremio Cloud Enterprise Edition Billing Question](https://community.dremio.com/t/dremio-cloud-enterprise-edition-billing-question/13092)
**Author:** [@Dan](https://community.dremio.com/u/Dan)\ **Replies:** 6\ **Last updated:** [September 2, 2025, 2:22pm UTC](https://community.dremio.com/t/dremio-cloud-enterprise-edition-billing-question/13092 "2025-09-02T14:22:03Z")
I am testing the Dremio Cloud and would like to upgrade to Dremio Cloud Enterprise Edition to test OAuth external IDP provider. I have a very small engine (2XS, max 1 replica) hosted in my own aws account. What is the es… --- ## [Pandas shows all columns as object when reading from Dremio via pyodbc](https://community.dremio.com/t/pandas-shows-all-columns-as-object-when-reading-from-dremio-via-pyodbc/13165)
**Author:** [@sabarivasan](https://community.dremio.com/u/sabarivasan)\ **Replies:** 0\ **Last updated:** [August 12, 2025, 11:59am UTC](https://community.dremio.com/t/pandas-shows-all-columns-as-object-when-reading-from-dremio-via-pyodbc/13165 "2025-08-12T11:59:41Z")
Environment Dremio version: dremio-community-26.0.0 Python: Python 3.10.12 pyodbc: latest pandas: 2.x What I’m doing python conn = pyodbc.connect("DSN=Dremio;UID=demo\_user;PWD=demo\_pass;Authenticatio… --- ## [Has Anyone Faced Intermittent Query Failures When Using Reflection-Accelerated Datasets in Dremio Cloud?](https://community.dremio.com/t/has-anyone-faced-intermittent-query-failures-when-using-reflection-accelerated-datasets-in-dremio-cloud/13144)
**Author:** [@ricaxa](https://community.dremio.com/u/ricaxa)\ **Replies:** 1\ **Last updated:** [August 4, 2025, 4:48am UTC](https://community.dremio.com/t/has-anyone-faced-intermittent-query-failures-when-using-reflection-accelerated-datasets-in-dremio-cloud/13144 "2025-08-04T04:48:50Z")
Hello I am currently testing a setup on Dremio Cloud where we rely heavily on raw & aggregation reflections to speed up BI dashboards (especially with Power BI and Tableau). :slightly\_smiling\_face: While the performance… --- ## [External Token Provider not working in Dremio Cloud](https://community.dremio.com/t/external-token-provider-not-working-in-dremio-cloud/13113)
**Author:** [@Dan](https://community.dremio.com/u/Dan)\ **Replies:** 3\ **Last updated:** [July 25, 2025, 10:06pm UTC](https://community.dremio.com/t/external-token-provider-not-working-in-dremio-cloud/13113 "2025-07-25T22:06:50Z")
I have configured KeyCloak as an external token provider by following these documents: External Token Providers | Dremio Documentation https://support.dremio.com/hc/en-us/articles/29109477930651-Configuring-KeyCloak-as… --- ## [Token exchange URL for dremio cloud](https://community.dremio.com/t/token-exchange-url-for-dremio-cloud/13121)
**Author:** [@Dan](https://community.dremio.com/u/Dan)\ **Replies:** 2\ **Last updated:** [July 22, 2025, 11:09pm UTC](https://community.dremio.com/t/token-exchange-url-for-dremio-cloud/13121 "2025-07-22T23:09:25Z")
In Enterprise edition, the token exchange url is /oauth/token. What is the corresponding url for Dremio Cloud? I tried https://data.dremio.cloud/oauth/token https://api.dremio.cloud/oauth/token None of them works. --- ## [Metadata Search Functionality in Arctic Catalog](https://community.dremio.com/t/metadata-search-functionality-in-arctic-catalog/13090)
**Author:** [@hassaan07](https://community.dremio.com/u/hassaan07)\ **Replies:** 1\ **Last updated:** [July 14, 2025, 6:04am UTC](https://community.dremio.com/t/metadata-search-functionality-in-arctic-catalog/13090 "2025-07-14T06:04:05Z")
Hi Everyone, We’ve recently transitioned from Dremio Enterprise to Dremio Cloud. One notable difference we’ve encountered is the absence of spaces in Dremio Cloud. After researching the community forum, I discovered tha… --- ## [It hangs when attempting to execute an SQL update using the Arrow Flight SQL client](https://community.dremio.com/t/it-hangs-when-attempting-to-execute-an-sql-update-using-the-arrow-flight-sql-client/13034)
**Author:** [@Dan](https://community.dremio.com/u/Dan)\ **Replies:** 2\ **Last updated:** [June 18, 2025, 11:34pm UTC](https://community.dremio.com/t/it-hangs-when-attempting-to-execute-an-sql-update-using-the-arrow-flight-sql-client/13034 "2025-06-18T23:34:10Z")
Hi, I created a simple program to test insert query to dremio cloud. But it hangs when attempting to execute an SQL update using the Arrow Flight SQL client. Please advise! I am using data.dremio.cloud with 443 port. p… --- ## [JOIN 2 tables using LIKE](https://community.dremio.com/t/join-2-tables-using-like/12999)
**Author:** [@Gary](https://community.dremio.com/u/Gary)\ **Replies:** 1\ **Last updated:** [May 27, 2025, 5:33am UTC](https://community.dremio.com/t/join-2-tables-using-like/12999 "2025-05-27T05:33:13Z")
Hi, Is it possible to join 2 tables using LIKE instead of “=” I have a list of name parts and want to find all the rows in table1 where the name column contains any value from the names column in table2. e.g. SELECT … --- ## [PowerBI: We cannot convert the value null to type Record](https://community.dremio.com/t/powerbi-we-cannot-convert-the-value-null-to-type-record/12995)
**Author:** [@patrickkooman](https://community.dremio.com/u/patrickkooman)\ **Replies:** 5\ **Last updated:** [May 21, 2025, 8:16pm UTC](https://community.dremio.com/t/powerbi-we-cannot-convert-the-value-null-to-type-record/12995 "2025-05-21T20:16:38Z")
Hi all, Suddenly, this morning my powerbi desktop gives the error as stated in the topic’s subject: “We cannot convert the value null to type Record” when refreshing a catelog view. Google quickly pointed me to this top… --- ## [Connecting Superset to Dremio](https://community.dremio.com/t/connecting-superset-to-dremio/12977)
**Author:** [@Terrence](https://community.dremio.com/u/Terrence)\ **Replies:** 3\ **Last updated:** [May 13, 2025, 6:34pm UTC](https://community.dremio.com/t/connecting-superset-to-dremio/12977 "2025-05-13T18:34:24Z")
Hi, I am in the AWS environment, Please help with the following. Currently superset is running on Ubuntu EC2 instance under the python virtual environment and Dremio is hosted in another Ubuntu EC2 instance, can you plea… --- ## [Iceberg file size on dremio](https://community.dremio.com/t/iceberg-file-size-on-dremio/11758)
**Author:** [@ajay098](https://community.dremio.com/u/ajay098)\ **Replies:** 26\ **Last updated:** [April 5, 2025, 4:01pm UTC](https://community.dremio.com/t/iceberg-file-size-on-dremio/11758 "2025-04-05T16:01:14Z")
Hi, We have generated parquet file of size 1GiB and uploaded on azure storage. Approximate data on this file is around 8460000 records with 30 columns. After moving this data to iceberg table, I could see 20 files are… --- ## [Custom column in query editor gives wrong answer for view sourced in dremio but works for same view sourced in SQL](https://community.dremio.com/t/custom-column-in-query-editor-gives-wrong-answer-for-view-sourced-in-dremio-but-works-for-same-view-sourced-in-sql/12915)
**Author:** [@Jillian](https://community.dremio.com/u/Jillian)\ **Replies:** 4\ **Last updated:** [April 3, 2025, 5:24am UTC](https://community.dremio.com/t/custom-column-in-query-editor-gives-wrong-answer-for-view-sourced-in-dremio-but-works-for-same-view-sourced-in-sql/12915 "2025-04-03T05:24:32Z")
Our IT team migrated our tables and views to dremio today and I am switching our data sources from the SQL storage to dremio. In the query editor, I repeated the applied steps for the new source that I used for the tabl… --- ## [Java 11 or higher is required to run Dremio](https://community.dremio.com/t/java-11-or-higher-is-required-to-run-dremio/12907)
**Author:** [@seetharam](https://community.dremio.com/u/seetharam)\ **Replies:** 3\ **Last updated:** [April 2, 2025, 9:25am UTC](https://community.dremio.com/t/java-11-or-higher-is-required-to-run-dremio/12907 "2025-04-02T09:25:09Z")
Hi, We are running dremio on docker hosts and trying upgarde dremio version to 25.2.1. and Mycoordinator container exited with the error. ““Java 11 or higher is required to run Dremio”” I have updated my docker base i… [Next page](https://community.dremio.com/c/dremio-cloud/9.md?page=1)