question Re: Impala Admission Control Configuration in Support Questions

Impala Admission Control Configuration

Abhijith_Nayak — Thu, 19 Dec 2024 11:51:40 GMT

Hello,

We are trying to implement Impala Admission Control.

Our requirement is if we have 5 users let it be A,B,C,D and E. I have created 2 resource pool and added user A,B,C under Submission Access Control of "resource_pool_1" and added user D and E under "resource_pool_2" now we require if user A or B or C will run any impala query it should run in "resource_pool_1" and if user D or E run any impala query it should run in "resource_pool_2".

But user does not set pool while running query it should run in allocated pool directly

How can we achieve this from Impala Admission Control Configuration?

Thanks in advance!

Re: Impala Admission Control Configuration

Shelton — Thu, 19 Dec 2024 16:44:57 GMT

@Abhijith_Nayak
To achieve the desired behavior where Impala queries automatically run in the respective resource pools based on the user, you can configure Impala Admission Control to handle this routing seamlessly. Here's how you can implement it.
1. Enable Resource Pools in Cloudera Manager

Ensure that Dynamic Resource Pools are enabled in Cloudera Manager:
Go to Cloudera Manager > Impala > Configuration > Admission Control.
Enable Admission Control if it isn’t already.

2. Create Resource Pools

You already have two resource pools (resource_pool_1 and resource_pool_2). Ensure these pools are properly configured:
- resource_pool_1: For users A, B, and C.
- resource_pool_2: For users D and E.

Verify the following settings for each pool:

Memory and CPU resources are allocated appropriately for the expected workloads.

Query concurrency limits are set based on your cluster’s capacity.

3. Configure Submission Access Control

Map the users to their respective resource pools:
1. Navigate to Cloudera Manager > Impala > Configuration > Admission Control > Resource Pools.
2. For resource_pool_1, under Submission Access Control, add:

A,B,C

3. For resource_pool_2, under Submission Access Control, add

D,E

This ensures that only the specified users can submit queries to their designated pools.

Configure Default Resource Pool Selection
- Use the pool_mapping configuration to automatically route queries based on the user. This eliminates the need for users to specify the pool explicitly when submitting queries.
Steps:
1. Navigate to Cloudera Manager > Impala > Configuration > Admission Control > Pool Mapping Rules.
2. Add rules to map users to their pools

user:A pool:resource_pool_1
user:B pool:resource_pool_1
user:C pool:resource_pool_1
user:D pool:resource_pool_2
user:E pool:resource_pool_2

5. Validate the Configuration

Restart the Impala services to apply the changes.
Run test queries as each user to confirm the routing works as expected:
- Log in as user A, B, C, D, and E and execute queries without specifying the resource pool.
- Use the following command in the Impala shell to check the assigned resource pool for a query:

PROFILE;

Look for the Admission result section to verify the query ran in the correct pool.

Expected Outcome

Users A, B, and C will have their queries automatically routed to resource_pool_1.
Users D and E will have their queries automatically routed to resource_pool_2.
No manual pool specification will be required during query submission.

This configuration ensures proper workload isolation and efficient resource utilization in your cluster. Let me know if further clarification is needed Happy hadooping !!!

Re: Impala Admission Control Configuration

Abhijith_Nayak — Mon, 23 Dec 2024 10:43:31 GMT

1. Enable Resource Pools in Cloudera Manager
2. Create Resource Pools
3. Configure Submission Access Control

We have done above configuration successfully
But we are not able to do this section Configure Default Resource Pool Selection
we don't have Pool Mapping Rules this option in Cloudera Manager > Impala > Configuration > Admission Control > Pool Mapping Rules. path

We are using CDP 7.1.9 and CM 7.11.3

Do we need to change any thing in Placement Rules section of Impala Admission Control Configuration page

Re: Impala Admission Control Configuration

Sofiane-CH — Tue, 25 Nov 2025 13:54:54 GMT

Hi,

Did anyone find a solution for the last question posted by "Abhijith_Nayak".

We are facing the same issue, we dont have :

Cloudera Manager > Impala > Configuration > Admission Control > Pool Mapping Rules

Regards
Sofiane

Re: Impala Admission Control Configuration

jagarwal — Mon, 11 May 2026 09:02:46 GMT

@Abhijith_Nayak @Sofiane-CH

Try below steps for Default Resource Pool Selection.

1. In your Cloudera Manager page, navigate to Clusters (Left side blue pane) > Impala Admission Control Configuration.

2. Click "Default Settings". Select "Allow these users and groups to submit to this pool". Add users or groups separated by comma with no extra spaces. For e.g: A,B,C,D,E

3. Now, click "Edit" in your respective resource pools. In tab "Submission Access Control". Select "Allow these users and groups to submit to this pool". Now, again add users or groups separated by comma with no extra spaces.
Below is an example for your mentioned pools resource_pool_1 and resource_pool_2:
resource_pool_1 --> A,B,C
resource_pool_2 --> D,E

4. Once, the above is done, click "Refresh Dynamic Resource Pools" and restart Impala.

References: