[jira] [Commented] (KAFKA-4447) Controller resigned but it also acts as a controller for a long time

["Json Tu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-4447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15711052#comment-15711052 ] 

Json Tu commented on KAFKA-4447:
--------------------------------

[~hachikuji] could you help review it，thanks.

> Controller resigned but it also acts as a controller for a long time 
> ---------------------------------------------------------------------
>
>                 Key: KAFKA-4447
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4447
>             Project: Kafka
>          Issue Type: Improvement
>          Components: controller
>    Affects Versions: 0.9.0.0, 0.9.0.1, 0.10.0.0, 0.10.0.1
>         Environment: Linux Os
>            Reporter: Json Tu
>              Labels: reliability
>         Attachments: log.tar.gz
>
>
> We have a cluster with 10 nodes，and we execute following operation as below.
> 1.we execute some topic partition reassign from one node to other 9 nodes in the cluster, and which triggered controller.
> 2.controller invoke PartitionsReassignedListener's handleDataChange and read all partition reassign rules from the zk path, and executed all onPartitionReassignment for all partition that match conditions.
> 3.but the controller is expired from zk, after what some nodes of 9 nodes also expired from zk.
> 5.then controller invoke onControllerResignation to resigned as the controller.
> we found after the controller is resigned, it acts as controller for about 3 minutes, which can be found in my attachment.



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