Status

Current state: Under Discussion

Discussion thread: here [Change the link from the KIP proposal email archive to your own email thread]

JIRA: here

Motivation

All Kafka component register AppInfo  metrics to track the application start time or commit-id etc. These metrics are useful for monitoring and debugging. However, the AppInfo doesn't provide client-id, which is an important information for custom metrics reporter. 

As the AppInfoParser  class registers a JMX MBean with the provided client-id but when it adds metrics to the Metrics registry the client-id is not included.

Public Interfaces

This approach would required modifying org.apache.kafka.common.utils.AppInfoParser.AppInfoMBean  interface to add a new method getClientId() .

Proposed Changes

The following code is a demonstration of how we will add to the getClientId method:

public interface AppInfoMBean {
    String getVersion();
    String getCommitId();
    Long getStartTimeMs();
    String getClientId();
}

Compatibility, Deprecation, and Migration Plan

n/a

Test Plan

change unit test or Integration test to verify the new method.

Rejected Alternatives

n/a