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Posted to dev@kafka.apache.org by "Joel Koshy (JIRA)" <ji...@apache.org> on 2013/05/01 00:46:22 UTC

[jira] [Commented] (KAFKA-886) Update info on Controlled shutdown and Preferred replica election tool

    [ https://issues.apache.org/jira/browse/KAFKA-886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646092#comment-13646092 ] 

Joel Koshy commented on KAFKA-886:
----------------------------------

Thanks for the great write-up. Couple of comments:

1) We should probably add a note on the controlled shutdown tool (script) usage that it is currently JMX-based and depends on the jmx.remote.port property being set (otherwise you won't be be able to use the script and will need to poke jmx through other means). We can reference KAFKA-817 which will remedy this and make it zookeeper-based instead of JMX.
2) Due to the above, in case people need to use local JMX operations and essentially do manually what the script does automatically then it is best to do a controlled shutdown and bounce of the controller last (as otherwise there would be unnecessary controller re-elections).
3) For the ListTopicCommand tool - maybe we should mention that if there are a lot of topics and we list info for all topics it can take a while to run unless it is in the same datacenter as the ZK cluster. Actually I think the ListTopicCommand should really be using the SimpleConsumer or producer to fetch metadata instead of reading ZK directly. That way, people don't have to zip up Kafka and copy it over to their production environment. What do you think?
                
> Update info on Controlled shutdown and Preferred replica election tool
> ----------------------------------------------------------------------
>
>                 Key: KAFKA-886
>                 URL: https://issues.apache.org/jira/browse/KAFKA-886
>             Project: Kafka
>          Issue Type: Sub-task
>    Affects Versions: 0.8
>            Reporter: Sriram Subramanian
>            Assignee: Sriram Subramanian
>            Priority: Blocker
>              Labels: p1
>


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