[jira] [Created] (KAFKA-840) Controller tries to perform preferred replica election on failover before state machines have started up

["Swapnil Ghike (JIRA)" <ji...@apache.org>]

Swapnil Ghike created KAFKA-840:
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             Summary: Controller tries to perform preferred replica election on failover before state machines have started up
                 Key: KAFKA-840
                 URL: https://issues.apache.org/jira/browse/KAFKA-840
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 0.8
            Reporter: Swapnil Ghike
            Assignee: Swapnil Ghike
            Priority: Blocker
             Fix For: 0.8


If the admin/preferred_replica_election path is non-empty when a new controller starts, the controller attempts to perform preferred replica election before the partition and replica state machine have been initialized. In this case, the controller will try to make invalid state transitions. 

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