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From "Jason Gustafson (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (KAFKA-7831) Consumer SubscriptionState missing synchronization
Date Fri, 08 Mar 2019 00:31:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-7831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Gustafson resolved KAFKA-7831.
------------------------------------
       Resolution: Fixed
    Fix Version/s: 2.3.0

> Consumer SubscriptionState missing synchronization
> --------------------------------------------------
>
>                 Key: KAFKA-7831
>                 URL: https://issues.apache.org/jira/browse/KAFKA-7831
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Jason Gustafson
>            Assignee: Jason Gustafson
>            Priority: Major
>             Fix For: 2.3.0
>
>
> ConsumerCoordinator installs a Metadata.Listener in order to update pattern subscriptions
after metadata changes. The listener is invoked from NetworkClient.poll, which could happen
in the heartbeat thread. Currently, however, there is no synchronization in SubscriptionState
to make this safe. 



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