[jira] [Created] (KAFKA-13986) DescribeQuorum does not return the observers (brokers) for the Metadata log

["Niket Goel (Jira)" <ji...@apache.org>]

Niket Goel created KAFKA-13986:
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             Summary: DescribeQuorum does not return the observers (brokers) for the Metadata log
                 Key: KAFKA-13986
                 URL: https://issues.apache.org/jira/browse/KAFKA-13986
             Project: Kafka
          Issue Type: Improvement
          Components: kraft
    Affects Versions: 3.0.1, 3.0.0
            Reporter: Niket Goel


h2. Background

While working on the [PR|https://github.com/apache/kafka/pull/12206] for KIP-836, we realized that the `DescribeQuorum` API does not return the brokers as observers for the metadata log.

As noted by [~dengziming] :
_We set nodeId=-1 if it's a broker so observers.size==0_

The related code is:

[https://github.com/apache/kafka/blob/4c9eeef5b2dff9a4f0977fbc5ac7eaaf930d0d0e/core/src/main/scala/kafka/raft/RaftManager.scala#L185-L189]
{code:java}
val nodeId = if (config.processRoles.contains(ControllerRole))
{ OptionalInt.of(config.nodeId) }
else
{ OptionalInt.empty() }
{code}
h2. ToDo

We should fix this and have the DescribeMetadata API return the brokers as observers for the metadata log.



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