Chesnay Schepler created FLINK-29030:
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Summary: Consider printing a warning if a Pojo contains a generic
type
Key: FLINK-29030
URL: https://issues.apache.org/jira/browse/FLINK-29030
Project: Flink
Issue Type: Improvement
Components: API / Type Serialization System
Reporter: Chesnay Schepler
Fix For: 1.17.0
Users are encouraged to use POJO types, that will be serialized by the
PojoSerializer which supports schema evolution.
If a user does not use a POJO we print an info message, linking to the docs and
citing potential performance issues.
However, no such message is printed if a POJO _contains_ a generic type.
As a result there may be users out there believing to have optimal performance
and support for schema evolution since, after all, they are able to use the
POJO serializer, when this may not be the case.
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