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https://issues.apache.org/jira/browse/CALCITE-7119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18012715#comment-18012715
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Julian Hyde commented on CALCITE-7119:
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Did you notice that HIVE-18423 added code that depended on
{{{}supportsFunction{}}}? If we remove that function, it may break Hive (and
other projects that depend on Calcite).
> The Dialect module does not require the supportsFunction interface
> ------------------------------------------------------------------
>
> Key: CALCITE-7119
> URL: https://issues.apache.org/jira/browse/CALCITE-7119
> Project: Calcite
> Issue Type: Improvement
> Reporter: Yu Xu
> Assignee: Yu Xu
> Priority: Minor
> Labels: pull-request-available
>
> *This is a regular minor-fix issue:*
> The Dialect.supportsFunction interface is not currently called anywhere,
> although it is inherited by some subclasses.
> Currently, only supportFunctions in the Dialect interface has no meaning and
> will affect the judgment of future Calcite developers. Therefore, it may be
> appropriate to delete this interface.
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