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From "Jun Rao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-495) Handle topic names with "/" on Kafka server
Date Mon, 10 Sep 2012 15:30:10 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13452074#comment-13452074
] 

Jun Rao commented on KAFKA-495:
-------------------------------

Thanks for the patch for 0.8. Overall, it looks good. Some minor comments.

80. LogManager:
80.1. We don't need to verify the topic name in getLog() since logs are not created there.
Verifying it in createLog is enough.
80.2. Get rid of unused imports.

81. TopicNameValidator: get rid of "/**/"

                
> Handle topic names with "/" on Kafka server
> -------------------------------------------
>
>                 Key: KAFKA-495
>                 URL: https://issues.apache.org/jira/browse/KAFKA-495
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.7, 0.8
>            Reporter: Neha Narkhede
>            Assignee: Swapnil Ghike
>              Labels: bugs
>             Fix For: 0.8, 0.7.1
>
>         Attachments: kafka-495-v0.8.patch, kafka-495-v1.patch, kafka-495-v2.patch, kafka-495-v3.patch,
kafka-495-v4.patch
>
>
> If a producer publishes data to topic "foo/foo", the Kafka server ends up creating an
invalid directory structure on the server. This corrupts the zookeeper data structure for
the topic - /brokers/topics/foo/foo. This leads to rebalancing failures on the consumer as
well as errors on the zookeeper based producer. 
> We need to harden the invalid topic handling on the Kafka server side to avoid this.

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