Impala Catalog Server HW Requirement(CPU)

[#1]

Please tell me the requirements of Impala.

In the HW requirements of Catalog Server and Impalad, the CPUs are listed as well, are they correct?
Does Catalog Server also require CPU, Min: 4 - Recommended: 16?

I referred to the following page.
 * Hardware Requirements
  * impala
   * https://www.cloudera.com/documentation/enterprise/6/release-notes/topics/rg_hardware_requirements.ht...
 * Impala
  * Impala Requirements
   * https://www.cloudera.com/documentation/enterprise/6/6.0/topics/impala_prereqs1.html#prereqs_hardware

[#2]

thank you for your answer.

I understood that the Catalog Server requires a CPU as well as Impalad.