JingsongLi commented on pull request #15569: URL: https://github.com/apache/flink/pull/15569#issuecomment-820897329
The root cause is that there is a custom `MapData` implementation from iceberg source. You can create a custom source with custom `MapData` to re-produce this problem. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
