[FLINK-9531] Improve logging during type extraction of the Row type

• Type: Improvement
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Component/s: API / Type Serialization System
• Labels: auto-deprioritized-major auto-deprioritized-minor auto-unassigned
• Assignee: Unassigned
• Reporter: Timo Walther
• Created: 05/Jun/18 15:51
• Updated: 29/Dec/21 22:38

Description

Users of the Table API in Java will get several warnings about the usage of Rows even though the table program is specified correctly.

org.apache.flink.api.java.typeutils.TypeExtractor - class org.apache.flink.types.Row is not a valid POJO type

We should improve the user experience here. A correctly defined table program should not cause those messages. Users of the row type should rather be informed that they have to provide type information manually.