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https://issues.apache.org/jira/browse/KAFKA-9453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17064999#comment-17064999
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Matthias J. Sax commented on KAFKA-9453:
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[~bchen225242] Not sure if I understand this ticket. The `transactional.id` is
not specified by the user but it's always generated by Kafka Streams. Can you
elaborate?
> Make transaction.id optional in group mode EOS
> ----------------------------------------------
>
> Key: KAFKA-9453
> URL: https://issues.apache.org/jira/browse/KAFKA-9453
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Boyang Chen
> Priority: Major
>
> After 447, one of the big improvement is that we are no longer requiring
> single writer scope guarantee, so that user doesn't have to configure a
> unique transactional.id for transaction safety.
> In fact, without security concern, we could even avoid using initTransaction
> API as well.
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