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https://issues.apache.org/jira/browse/FLINK-12204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16818512#comment-16818512
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Hequn Cheng commented on FLINK-12204:
-------------------------------------
[~fan_li_ya] Glad that you are also interested in this. I have already finished
this in my local branch.
The exception would be
{code:java}
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Integer for index 1.
at
org.apache.flink.api.java.io.jdbc.JDBCOutputFormat.writeRecord(JDBCOutputFormat.java:153)
at
org.apache.flink.api.java.io.jdbc.JDBCOutputFormat.writeRecord(JDBCOutputFormat.java:41)
at
org.apache.flink.runtime.operators.DataSinkTask.invoke(DataSinkTask.java:218)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)
at java.lang.Thread.run(Thread.java:748)
{code}
If you don't mind I will open a PR soon. However, if you are still interested
it and want to give it a try. I can free this issue to you. :)
> Improve JDBCOutputFormat ClassCastException
> -------------------------------------------
>
> Key: FLINK-12204
> URL: https://issues.apache.org/jira/browse/FLINK-12204
> Project: Flink
> Issue Type: Task
> Components: Connectors / JDBC
> Affects Versions: 1.8.0
> Reporter: Fabian Hueske
> Assignee: Hequn Cheng
> Priority: Major
> Fix For: 1.9.0, 1.8.1
>
>
> ClassCastExceptions thrown by JDBCOutputFormat are not very helpful because
> they do not provide information for which input field the cast failed.
> We should catch the exception and enrich it with information about the
> affected field to make it more useful.
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