[jira] [Created] (KAFKA-930) Integrate preferred replica election logic into kafka

["Sriram Subramanian (JIRA)" <ji...@apache.org>]

Sriram Subramanian created KAFKA-930:
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             Summary: Integrate preferred replica election logic into kafka
                 Key: KAFKA-930
                 URL: https://issues.apache.org/jira/browse/KAFKA-930
             Project: Kafka
          Issue Type: Bug
            Reporter: Sriram Subramanian
            Assignee: Sriram Subramanian
             Fix For: 0.9


It seems useful to integrate the preferred replica election logic into kafka controller. A simple way to implement this would be to have a background thread that periodically finds the topic partitions that are not assigned to the preferred broker and initiate the move. We could come up with some heuristics to initiate the move only if the imbalance over a specific threshold in order to avoid rebalancing too aggressively. Making the software do this reduces operational cost.

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