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https://issues.apache.org/jira/browse/KAFKA-554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13597661#comment-13597661
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Neha Narkhede commented on KAFKA-554:
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+1 on patch v4
> Move all per-topic configuration into ZK and add to the CreateTopicCommand
> --------------------------------------------------------------------------
>
> Key: KAFKA-554
> URL: https://issues.apache.org/jira/browse/KAFKA-554
> Project: Kafka
> Issue Type: New Feature
> Reporter: Jay Kreps
> Labels: project
> Fix For: 0.8.1
>
> Attachments: KAFKA-554-v1.patch, KAFKA-554-v2.patch,
> KAFKA-554-v3.patch, KAFKA-554-v4.patch
>
>
> We have a number of per-topic configurations that control message retention
> and flush interval. Here is the list of properties I find in KafkaConfig that
> appear to be per-topic:
> topic.log.file.size
> topic.log.roll.hours
> topic.log.retention.hours
> topic.log.retention.size
> topic.flush.intervals.ms
> Currently we specify these in server.properties. This is not a good solution
> as it requires a rolling bounce of the cluster to make a change, which just
> doesn't scale to having hundreds of topics. Also the map encoded in a CSV
> string is kind of hacky.
> We should move these into ZK in some kind of JSON blob that allows easily
> adding new per-topic configs and we should remove these from
> server.properties.
> It would be good to start with a wiki design and get consensus on that first.
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