Native engine crashes on literal sha2() with 'Unsupported argument types'

[andygrove]

Description

When Spark's ConstantFolding optimizer rule is disabled, an all-literal sha2() call reaches the native engine, which crashes with:

Unsupported argument types for sha2 function

How to Reproduce

SET spark.sql.optimizer.excludedRules=org.apache.spark.sql.catalyst.optimizer.ConstantFolding;
SELECT sha2('test', 256);

Expected Behavior

The native engine should handle literal sha2 inputs gracefully — either by computing the correct result or by falling back to Spark.

[0lai0]

take

[0lai0]

@andygrove I'm not sure should I add sha2.rs in native/spark-expr/src/hash_funcs/ or use fallback to spark.
Please let me know which one is better, thanks !

[parthchandra]

@0lai0 why not try the native code path first and if that fails, fallback to spark.

[0lai0]

Thanks @parthchandra for the feedback. I'll incorporate these suggestions into the update. Thank you!