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https://issues.apache.org/jira/browse/KAFKA-103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13088032#comment-13088032
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Joel Koshy commented on KAFKA-103:
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At least per kafka-103-patch.v1 it is not totally ignored. So if the whitelist 
config contains: SomeTopic:1 then SomeTopic will not get mirrored because it 
will fail the isTopicAllowed filter in KafkaServerStartable. i.e., no topics 
will get mirrored.

> Make whitelist/blacklist mirror configs more consistent
> -------------------------------------------------------
>
>                 Key: KAFKA-103
>                 URL: https://issues.apache.org/jira/browse/KAFKA-103
>             Project: Kafka
>          Issue Type: Improvement
>    Affects Versions: 0.7
>            Reporter: Joel Koshy
>            Priority: Minor
>         Attachments: kafka-103-incremental-v2.patch, kafka-103-patch.v1
>
>
> The blacklist config for kafka mirrors is a comma separated list of topics. 
> However, the whitelist config is a comma-separated list of 
> "topics:numthreads" pairs, which allows for a multi-threaded consumer in the 
> mirror. It will be good to keep the two configs consistent in format. So, we 
> can make the whitelist config a comma-separated list of topics and provide a 
> config (say, kafka.mirror.consumer.threads) that will specify the number of 
> threads to use for all topics in the whitelist (if present).

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