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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (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:comment-tabpanel&focusedCommentId=16396325#comment-16396325
] 

ASF GitHub Bot commented on KAFKA-6638:
---------------------------------------

lindong28 opened a new pull request #4696: KAFKA-6638; Leader should remove unassigned replica
from ISR
URL: https://github.com/apache/kafka/pull/4696
 
 
   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.
   
   ### Committer Checklist (excluded from commit message)
   - [ ] Verify design and implementation 
   - [ ] Verify test coverage and CI build status
   - [ ] Verify documentation (including upgrade notes)
   

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> 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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