@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: https://docs.cloudera.com/runtime/7.3.1/impala-manage/topics/impala-dynamic-pool-configure.html  https://docs.cloudera.com/runtime/7.3.1/impala-manage/topics/impala-dynamic-pool-settings.html    ... View more