[jira] [Updated] (FLINK-38192) Improve DynamicSourceUtils exception msg

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-38192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-38192:
-----------------------------------
    Labels: pull-request-available  (was: )

> Improve DynamicSourceUtils exception msg
> ----------------------------------------
>
>                 Key: FLINK-38192
>                 URL: https://issues.apache.org/jira/browse/FLINK-38192
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / Planner
>            Reporter: Cai Liuyang
>            Priority: Not a Priority
>              Labels: pull-request-available
>
> If DynamicTableSource doesn't impl the interface of SupportsReadingMetadata, it will throw an exception with msg like: "Table 'xxx' declares metadata columns, but the underlying DynamicTableSource doesn't implement the SupportsReadingMetadata interface. Therefore, metadata cannot be read from the given source. "，see code：[DynamicSourceUtils#validateAndApplyMetadata|https://github.com/apache/flink/blob/master/flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/connectors/DynamicSourceUtils.java#L442]
>  
> maybe we can print DynamicTableSource's real class name rather than DynamicTableSource to provide more information



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