[SAMZA-2762] CPU metric doesn't count over child processes usage

• Type: Improvement
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Assignee: Alan Zhang
• Reporter: Alan Zhang
• Created: 19/Oct/22 21:54
• Updated: 07/Nov/22 23:35

Description

The "process-cpu-usage" metric only return the  “recent cpu usage” for the Java Virtual Machine process: https://samza.apache.org/learn/documentation/1.6.0/operations/monitoring.html

We have observed some use cases that created child processes(e.g. TensorFlow process to do model inference) outside the JVM. With current implementation, we can't know the CPU usage for these child processes.

Issue Links

• links to: SAMZA-2762: new cpu usage metric which counts child processes usage