Why does Kafka build so many connections?

[allenhan]

here is my config，Is there any configuration problem for me?

[bosky101]

Your topic may be having a large number of partitions?

…

[allenhan]

Your topic may be having a large number of partitions?
…

Only five topics, Kafka single-node deployment, are used here. Look at the monitoring for a moment, no access and then the connection has been established all the time.

[mskec]

I have the same issue with a large number of connections. I assume they are causing delay in sending new messages to kafka.

It started happening after upgrading kafka from version v2.0.0 to v2.2.1.
It used to be ~16 connections, now it's above 4920.

@allenhan have you found a solution to this?

[XinXuanBo]

@mskec I have the same issue. have you found a solution to this?

[mskec]

@XinXuanBo I haven't found the solution with this library. I guess it's not maintained anymore and you might want to check out another one (eg. https://github.com/kafka4beam/brod)