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Posted to dev@kafka.apache.org by "Roger Hoover (JIRA)" <ji...@apache.org> on 2016/06/16 21:07:05 UTC

[jira] [Created] (KAFKA-3858) Add functions to print stream topologies

Roger Hoover created KAFKA-3858:
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             Summary: Add functions to print stream topologies
                 Key: KAFKA-3858
                 URL: https://issues.apache.org/jira/browse/KAFKA-3858
             Project: Kafka
          Issue Type: New Feature
          Components: streams
    Affects Versions: 0.10.0.0
            Reporter: Roger Hoover
            Assignee: Guozhang Wang


For debugging and development, it would be very useful to be able to print Kafka streams topologies.  At a minimum, it would be great to be able to see the logical topology including with Kafka topics linked by sub-topologies.  I think that this information does not depend on partitioning.  For more detail, it would be great to be able to print the same logical topology but also showing number of tasks (an perhaps task ids?).  Finally, it would be great to show the physical topology after the tasks have been mapped to JVMs + threads.



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