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https://issues.apache.org/jira/browse/KAFKA-990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13743944#comment-13743944
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Sriram Subramanian commented on KAFKA-990:
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2.1 will do so.
2.2 We cannot make it mandatory. It is not required when explicit list is 
specified. In the case when only topics are specified we do make it mandatory.

31. There is already a tool for that. It is called CheckReassignmentStatus.
                
> Fix ReassignPartitionCommand and improve usability
> --------------------------------------------------
>
>                 Key: KAFKA-990
>                 URL: https://issues.apache.org/jira/browse/KAFKA-990
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Sriram Subramanian
>            Assignee: Sriram Subramanian
>         Attachments: KAFKA-990-v1.patch, KAFKA-990-v1-rebased.patch, 
> KAFKA-990-v2.patch
>
>
> 1. The tool does not register for IsrChangeListener on controller failover.
> 2. There is a race condition where the previous listener can fire on 
> controller failover and the replicas can be in ISR. Even after re-registering 
> the ISR listener after failover, it will never be triggered.
> 3. The input the tool is a static list which is very hard to use. To improve 
> this, as a first step the tool needs to take a list of topics and list of 
> brokers to do the assignment to and then generate the reassignment plan.

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