[jira] [Created] (KAFKA-4248) Consumer can return data from old regex subscription in poll()

[Jason Gustafson (JIRA)]

Jason Gustafson created KAFKA-4248:
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             Summary: Consumer can return data from old regex subscription in 
poll()
                 Key: KAFKA-4248
                 URL: https://issues.apache.org/jira/browse/KAFKA-4248
             Project: Kafka
          Issue Type: Bug
          Components: consumer
            Reporter: Jason Gustafson
            Assignee: Jason Gustafson
             Fix For: 0.10.1.0


Because we only update the subscription from the metadata listener currently, 
it is possible when the user changes regex subscriptions to receive data from 
the old subscription. To fix this, we need to ensure that we rematch the new 
regex against the current metadata



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