Konstantin Knauf created FLINK-18185:
----------------------------------------
Summary: Confusing ValidationExcetion in DataGenTableSourceFactory
Key: FLINK-18185
URL: https://issues.apache.org/jira/browse/FLINK-18185
Project: Flink
Issue Type: Improvement
Components: Table SQL / API
Affects Versions: 1.11.0
Reporter: Konstantin Knauf
If you create a "datagen" connector with a squence data type and do not provide
"start" and "end" you'll see a validation error like below. Instead of logging
the property an `OptionBuilder` is logged instead.
```
Caused by: org.apache.flink.table.api.ValidationException: Could not find
required property
'org.apache.flink.configuration.ConfigOptions$OptionBuilder@5822fcdd'.
at
org.apache.flink.table.factories.DataGenTableSourceFactory.lambda$createSequenceGenerator$1(DataGenTableSourceFactory.java:181)
~[flink-table-api-java-bridge_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
at java.base/java.util.Optional.orElseThrow(Unknown Source) ~[na:na]
at
org.apache.flink.table.factories.DataGenTableSourceFactory.createSequenceGenerator(DataGenTableSourceFactory.java:180)
~[flink-table-api-java-bridge_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
at
org.apache.flink.table.factories.DataGenTableSourceFactory.createDataGenerator(DataGenTableSourceFactory.java:118)
~[flink-table-api-java-bridge_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
at
org.apache.flink.table.factories.DataGenTableSourceFactory.createDynamicTableSource(DataGenTableSourceFactory.java:102)
~[flink-table-api-java-bridge_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
at
org.apache.flink.table.factories.FactoryUtil.createTableSource(FactoryUtil.java:122)
~[flink-table-common-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
... 142 common frames omitted
```
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