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From "Dong Lin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-6638) Leader should remove unassigned replica from ISR
Date Tue, 13 Mar 2018 00:54:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-6638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dong Lin updated KAFKA-6638:
----------------------------
    Description: During partition reassignment, controller may remove a replica from the replica
set while still keeping the replica in the isr set. One solution to fix this issue is to let
the controller remove replica from isr set as well. This requires more change in the code
because controller needs to update the zookeeper node to change the isr properly. Another
solution, which keeps controller simple, is to let leader node remove unassigned replica from
the isr set.

> Leader should remove unassigned replica from ISR
> ------------------------------------------------
>
>                 Key: KAFKA-6638
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6638
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Dong Lin
>            Assignee: Dong Lin
>            Priority: Major
>
> During partition reassignment, controller may remove a replica from the replica set while
still keeping the replica in the isr set. One solution to fix this issue is to let the controller
remove replica from isr set as well. This requires more change in the code because controller
needs to update the zookeeper node to change the isr properly. Another solution, which keeps
controller simple, is to let leader node remove unassigned replica from the isr set.



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