Brokers: Wrong 'Online partition count' value

[abhirathod95]

Issue submitter TODO list

• [X] I've looked up my issue in FAQ
• [X] I've searched for an already existing issues here
• [X] I've tried running main-labeled docker image and the issue still persists there
• [X] I'm running a supported version of the application which is listed here

Describe the bug (actual behavior)

Kafka UI used to show the actual partition count per broker in the "Online Partitions" column under "Brokers" tab. After upgrading to v1.0.0, each broker row shows the total number of online partitions instead. Weirdly, the "partition skew" calculations are still accurate.

For example take a balanced cluster with 178 partitions, rep factor of 3, and 4 brokers. There are a total of 534 replicas in the cluster and each broker row in the table should show 133 or 134 online partitions. However, all of the rows are showing 178.

Expected behavior

Each broker should show the correct number of online partition replicas it holds. Given the example above, it should be 133 or 134 per broker.

Your installation details

I'm using v1.0.0 with a generic config file, nothing unique.

Steps to reproduce

Deploy kafka ui and link it to any cluster. I've tried it with 4 different clusters and they all show the same thing.

Screenshots

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Logs

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Additional context

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[bachmanity1]

Hi @Haarolean,

We're encountering the exact same issue - each broker row is displaying the total number of online partitions, rather than showing only the partitions located on that specific broker.

Could you please take a look at this?

[Haarolean]

TODO: Rather than setting 'online partitions' column value to onlinePartitionCount field value from cluster info, use the field partitionsLeader from broker info.

[bachmanity1]

Rather than setting 'online partitions' column value to onlinePartitionCount field value from cluster info, use the field partitionsLeader from broker info.

I think it should be just partitions rather than partitionsLeader.

[Haarolean]

I think it should be just partitions rather than partitionsLeader.

why?

[bachmanity1]

why?

I believe the partitionsLeader field represents the number of leaders located on a particular broker, and this information is already displayed in the Leaders column. The partitions field, on the other hand, reflects the number of partitions on a broker, so it would make more sense to use this value for the Online Partitions column.

[AntoonBeres]

+1 We are encountering the same issue