Gengliang Wang created SPARK-28512:
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Summary: New optional mode: throw runtime exceptions on casting
failures
Key: SPARK-28512
URL: https://issues.apache.org/jira/browse/SPARK-28512
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.0.0
Reporter: Gengliang Wang
In popular DBMS like MySQL/PostgreSQL/Oracle, runtime exceptions are thrown on
casting, e.g. cast('abc' as int)
While in Spark, the result is converted as null silently. It is by design since
we don't want a long-running job aborted by some casting failure. But there are
scenarios that users want to make sure all the data conversion are correct,
like the way they use MySQL/PostgreSQL/Oracle.
If the changes touch too much code, we can limit the new optional mode to table
insertion first. By default the new behavior is disabled.
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