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https://issues.apache.org/jira/browse/FLINK-15233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16995449#comment-16995449
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Jark Wu commented on FLINK-15233:
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[~twalthr], Yes, we will solve the changelog story in 1.11 but that is
orthogonal topic. This issue is not proposing to drop this property, but to
have a default value. Currently, {{'update-mode'='append'}} is mandatory for
kafka users, and users may forget to set it.
No matter to drop this property or extend the values in the future, I think it
doesn't conflict with having a default value.
> Improve Kafka connector properties make append update-mode as default
> ---------------------------------------------------------------------
>
> Key: FLINK-15233
> URL: https://issues.apache.org/jira/browse/FLINK-15233
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Kafka
> Reporter: Jark Wu
> Priority: Major
> Fix For: 1.10.0
>
>
> Currently, {{update-mode}} is a required properties of Kafka. However, Kafka
> only support append {{update-mode}}. It is weird and un-user-friendly to make
> users set such a properties mandatory. We can make this properties as
> optional and {{append}} by default.
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