[jira] [Created] (KAFKA-8810) Add mechanism to detect topology mismatch between streams instances

["Vinoth Chandar (JIRA)" <ji...@apache.org>]

Vinoth Chandar created KAFKA-8810:
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             Summary: Add mechanism to detect topology mismatch between streams instances
                 Key: KAFKA-8810
                 URL: https://issues.apache.org/jira/browse/KAFKA-8810
             Project: Kafka
          Issue Type: Improvement
          Components: streams
            Reporter: Vinoth Chandar


Noticed this while reading through the StreamsPartitionAssignor related code. If an user accidentally deploys a different topology on one of the instances, there is no mechanism to detect this and refuse assignment/take action. Given Kafka Streams is designed as an embeddable library, I feel this is rather an important scenario to handle. For e.g, kafka streams is embedded into a web front end tier and operators deploy a hot fix for a site issue to a few instances that are leaking memory and that accidentally also deploys some topology changes with it. 


Please feel free to close the issue, if its a duplicate. (Could not find a ticket for this) 



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