[jira] [Resolved] (KAFKA-1313) Support adding replicas to existing topic partitions

["Guozhang Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-1313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guozhang Wang resolved KAFKA-1313.
----------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: 0.9.0)
                   0.8.2

> Support adding replicas to existing topic partitions
> ----------------------------------------------------
>
>                 Key: KAFKA-1313
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1313
>             Project: Kafka
>          Issue Type: New Feature
>          Components: tools
>    Affects Versions: 0.8.0
>            Reporter: Marc Labbe
>            Priority: Critical
>             Fix For: 0.8.2
>
>
> There is currently no easy way to add replicas to an existing topic partitions.
> For example, topic create-test has been created with ReplicationFactor=1: 
> Topic:create-test  PartitionCount:3    ReplicationFactor:1 Configs:
>     Topic: create-test Partition: 0    Leader: 1   Replicas: 1 Isr: 1
>     Topic: create-test Partition: 1    Leader: 2   Replicas: 2 Isr: 2
>     Topic: create-test Partition: 2    Leader: 3   Replicas: 3 Isr: 3
> I would like to increase the ReplicationFactor=2 (or more) so it shows up like this instead.
> Topic:create-test  PartitionCount:3    ReplicationFactor:2 Configs:
>     Topic: create-test Partition: 0    Leader: 1   Replicas: 1,2 Isr: 1,2
>     Topic: create-test Partition: 1    Leader: 2   Replicas: 2,3 Isr: 2,3
>     Topic: create-test Partition: 2    Leader: 3   Replicas: 3,1 Isr: 3,1
> Use cases for this:
> - adding brokers and thus increase fault tolerance
> - fixing human errors for topics created with wrong values



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