[jira] [Created] (STORM-2691) storm-kafka-client Trident spout communicates with the Coordinator through a static field

["Stig Rohde Døssing (JIRA)" <ji...@apache.org>]

Stig Rohde Døssing created STORM-2691:
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             Summary: storm-kafka-client Trident spout communicates with the Coordinator through a static field
                 Key: STORM-2691
                 URL: https://issues.apache.org/jira/browse/STORM-2691
             Project: Apache Storm
          Issue Type: Bug
          Components: storm-kafka-client
    Affects Versions: 2.0.0, 1.1.1
            Reporter: Stig Rohde Døssing


The Trident Kafka spout uses the KafkaTridentSpoutTopicPartitionRegistry enum to pass existing topic partitions from the spout to the coordinator. This only works when those components happen to be in the same JVM. 

The coordinator runs in the TridentSpoutCoordinator bolt here https://github.com/apache/storm/blob/4c8a986f519cdf3e63bed47e9c4f723e4867267a/storm-client/src/jvm/org/apache/storm/trident/topology/TridentTopologyBuilder.java#L162, while the spout instances run in TridentSpoutExecutors here https://github.com/apache/storm/blob/4c8a986f519cdf3e63bed47e9c4f723e4867267a/storm-client/src/jvm/org/apache/storm/trident/topology/TridentTopologyBuilder.java#L176.

We should replace the registry enum with writes to Zookeeper or something similar.



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