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https://issues.apache.org/jira/browse/FLINK-13965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16923029#comment-16923029
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vinoyang commented on FLINK-13965:
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[~till.rohrmann] and [~Zentol] WDYT?
> Keep hasDeprecatedKeys in ConfigOption and mark it with @Deprecated annotation
> ------------------------------------------------------------------------------
>
> Key: FLINK-13965
> URL: https://issues.apache.org/jira/browse/FLINK-13965
> Project: Flink
> Issue Type: Test
> Affects Versions: 1.9.0
> Reporter: vinoyang
> Priority: Major
>
> In our program based on Flink 1.7.2, we used method
> {{ConfigOption#hasDeprecatedKeys}}. But, this method was renamed to
> {{hasFallbackKeys}} in FLINK-10436. So after we bump our flink version to
> 1.9.0, we meet compile error.
>
> It seems we replaced the deprecated key with an entity {{FallbackKey}}.
> However, I still see the method {{withDeprecatedKeys}}. Since we keep the
> method {{withDeprecatedKeys}}, why not keep the method {{hasDeprecatedKeys}}.
> Although, this public API did not marked as {{Public}} annotation. IMHO,
> {{ConfigOption}} is hosted in flink-core module, many users also use it, we
> should maintain the compatibility as far as possible.
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