cancel
Showing results forย 
Search instead forย 
Did you mean:ย 
Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
cancel
Showing results forย 
Search instead forย 
Did you mean:ย 

Why can't I query a table from a cluster, but can query from another cluster in the same workspace

jdhao
New Contributor II
I have two clusters A, B under the same azure databricks workspace. Under cluster A, inside my notebook, I tried to query a table: `SELECT * FROM some_table LIMIT 5`.  It shows some permission errors. Under cluster B, if I run the same sql query, it works without error.

I thought the table under metastore is accessible to all clusters under the workspace, but apparently I am wrong.

Is there anything settings in cluster level that can explain this issue?

4 REPLIES 4

Lakshay
Databricks Employee
Databricks Employee

Check for any spark config or init script differences in the two clusters.

jdhao
New Contributor II

Hi Lakshay:

I compared the configurations for the two clusters, I can see that for the cluster where I can execute the SQL query, it has more configurations for spark, the key for those additional configuration:

spark.databricks.acl.dfAclsEnabled
spark.databricks.cluster.profile
spark.databricks.repl.allowedLanguages
spark.hadoop.fs.adls.oauth2.access.token.provider.type
spark.hadoop.fs.adls.oauth2.client.id
spark.hadoop.fs.adls.oauth2.credential
spark.hadoop.fs.adls.oauth2.refresh.url
spark.hadoop.fs.azure.account.auth.type.datalakelakeprdwe002.dfs.core.windows.net
spark.hadoop.fs.azure.account.oauth.provider.type.datalakelakeprdwe002.dfs.core.windows.net
spark.hadoop.fs.azure.account.oauth2.client.endpoint.datalakelakeprdwe002.dfs.core.windows.net
spark.hadoop.fs.azure.account.oauth2.client.id.datalakelakeprdwe002.dfs.core.windows.net
spark.hadoop.fs.azure.account.oauth2.client.secret.datalakelakeprdwe002.dfs.core.windows.net

Can check which one of these additonal settings affect the behavior?

 

Lakshay
Databricks Employee
Databricks Employee

Hi @jdhao ,

I see a lot of configs related to ADLS authentication(except first 3). All these configs will be needed when you want to access the data stored in ADLS.

jdhao
New Contributor II

Okay, I see, maybe the tables are physically stored in ADLS, but one cluster is lacking those auth info, so we can not query the tables.

Connect with Databricks Users in Your Area

Join a Regional User Group to connect with local Databricks users. Events will be happening in your city, and you wonโ€™t want to miss the chance to attend and share knowledge.

If there isnโ€™t a group near you, start one and help create a community that brings people together.

Request a New Group