Marios Trivyzas created FLINK-24420:
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Summary: Casting to a "narrower" type doesn't throw exception but
follows Java overflow
Key: FLINK-24420
URL: https://issues.apache.org/jira/browse/FLINK-24420
Project: Flink
Issue Type: Sub-task
Reporter: Marios Trivyzas
Ideally we should provide config option to be able to keep current behaviour
where such casts follow the standard Java overflow, but in order to avoid
"hidden" erroneous behaviour the user should be able to have an error thrown
when an overflow happens. So basically range checks for each type like TINYINT,
SMALLINT, INT, FLOAT should be enforced. Keep in mind of such range checks for
every conversion would add performance overhead.
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