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From "Zeynep Arikoglu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-5125) controlled.shutdown.enable=true leads blocking some time during shutdown when the broker is the only remaining broker
Date Tue, 25 Apr 2017 17:03:04 GMT
Zeynep Arikoglu created KAFKA-5125:
--------------------------------------

             Summary: controlled.shutdown.enable=true leads blocking some time during shutdown
when the broker is the only remaining broker
                 Key: KAFKA-5125
                 URL: https://issues.apache.org/jira/browse/KAFKA-5125
             Project: Kafka
          Issue Type: Bug
          Components: controller
    Affects Versions: 0.10.2.0, 0.10.1.1
         Environment: Ubuntu 16
            Reporter: Zeynep Arikoglu
         Attachments: Stack dump.pdf

The documentation clearly states 'Note that controlled shutdown will only succeed if all the
partitions hosted on the broker have replicas' but
even if we have replication, when you try to shutdown the broker that is serving as the only
remaining broker for a partition, you will end up blocking for some time if the controlled
shutdown is set to true. Say we have two brokers and our topics are replicated. When we shutdown
the first one, it will terminate gracefully with controlled shutdown set to true. When we
shutdown the second one, it will block and would have to be killed forcefully after a minute
or so.



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