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https://issues.apache.org/jira/browse/FLINK-22964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arvid Heise resolved FLINK-22964.
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Release Note: Connectors do not transitively hold a reference to
`flink-core` anymore. That means that a fat jar with a connector does not
include `flink-core` with this fix.
Resolution: Fixed
> Connector-base exposes dependency to flink-core.
> ------------------------------------------------
>
> Key: FLINK-22964
> URL: https://issues.apache.org/jira/browse/FLINK-22964
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Common
> Affects Versions: 1.14.0, 1.13.1, 1.12.4
> Reporter: Arvid Heise
> Assignee: Arvid Heise
> Priority: Major
> Labels: classloading, pull-request-available
> Fix For: 1.14.0, 1.12.5, 1.13.2
>
>
> Connectors get shaded into the user jar and as such should contain no
> unnecessary dependencies to flink. However, connector-base is exposing
> `flink-core` which then by default gets shaded into the user jar. Except for
> 6MB of extra size, the dependency also causes class loading issues, when
> `classloader.parent-first-patterns` does not include `o.a.f`.
> Fix is to make `flink-core` provided in `connector-base`.
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