Oleg Muravskiy created KAFKA-9173:
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             Summary: StreamsPartitionAssignor assigns partitions to only one 
worker
                 Key: KAFKA-9173
                 URL: https://issues.apache.org/jira/browse/KAFKA-9173
             Project: Kafka
          Issue Type: Bug
          Components: streams
    Affects Versions: 2.2.1, 2.3.0
            Reporter: Oleg Muravskiy
         Attachments: StreamsPartitionAssignor.log

I'm running a distributed KafkaStreams application on 10 worker nodes, 
subscribed to 21 topics with 10 partitions in each. I'm only using a Processor 
interface, and a persistent state store.

However, only one worker gets assigned partitions, all other workers get 
nothing. Restarting the application, or cleaning local state stores does not 
help. StreamsPartitionAssignor migrates to other nodes, and eventually picks up 
other node to assign partitions to, but still only one node.

It's difficult to figure out where to look for the signs of problems, I'm 
attaching the log messages from the StreamsPartitionAssignor. Let me know what 
else I could provide to help resolve this.

[^StreamsPartitionAssignor.log]



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