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https://issues.apache.org/jira/browse/KAFKA-1498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14041040#comment-14041040
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Guozhang Wang commented on KAFKA-1498:
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Created reviewboard https://reviews.apache.org/r/22874/
against branch origin/trunk
> new producer performance and bug improvements
> ---------------------------------------------
>
> Key: KAFKA-1498
> URL: https://issues.apache.org/jira/browse/KAFKA-1498
> Project: Kafka
> Issue Type: Bug
> Components: core
> Reporter: Jun Rao
> Assignee: Guozhang Wang
> Attachments: KAFKA-1498.patch, kafka-1498.patch
>
>
> We have seen the following issues with the new producer.
> 1. The producer request can be significantly larger than the configured batch
> size.
> 2. The bottleneck in mirrormaker when there are keyed messages and
> compression is turned on.
> 3. The selector is woken up on every message in the new producer.
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