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https://issues.apache.org/jira/browse/KAFKA-5251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16030591#comment-16030591
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ASF GitHub Bot commented on KAFKA-5251:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/3161
> Producer should drop queued sends when transaction is aborted
> -------------------------------------------------------------
>
> Key: KAFKA-5251
> URL: https://issues.apache.org/jira/browse/KAFKA-5251
> Project: Kafka
> Issue Type: Sub-task
> Components: clients, core, producer
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
> Priority: Blocker
> Labels: exactly-once
> Fix For: 0.11.0.0
>
>
> As an optimization, if a transaction is aborted, we can drop any records
> which have not yet been sent to the brokers. However, to avoid the sequence
> number getting out of sync, we need to continue sending any request which has
> been sent at least once.
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