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From "Ewen Cheslack-Postava (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-4083) ReassignPartitionsCommand does not check replication factor
Date Tue, 31 Oct 2017 03:41:00 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-4083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16226194#comment-16226194
] 

Ewen Cheslack-Postava commented on KAFKA-4083:
----------------------------------------------

Presumably it is https://github.com/apache/kafka/pull/1779

> ReassignPartitionsCommand does not check replication factor
> -----------------------------------------------------------
>
>                 Key: KAFKA-4083
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4083
>             Project: Kafka
>          Issue Type: Bug
>          Components: admin, core
>    Affects Versions: 0.8.2.0, 0.9.0.0, 0.10.0.0
>         Environment: Linux 14.04 LTS, Scala 2.10
>            Reporter: Simon Wan Wenli
>            Assignee: Simon Wan Wenli
>            Priority: Minor
>              Labels: newbie
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> ReassignPartitionsCommand does not check whether the replication factor of a partition
is the same as existing replication factor, which may result that different partitions of
a topic have different number of replicas. More specifically, TopicCommand will throw exception
which contains "All partitions should have the same number of replicas." as the message when
the user tries to add partitions. I think this loophole also may leave Kafka in a situation
from which it is difficult to recover.



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