comphead commented on code in PR #1687:
URL: https://github.com/apache/datafusion-comet/pull/1687#discussion_r2093701858
##########
native/core/src/parquet/parquet_support.rs:
##########
@@ -171,7 +178,36 @@ fn cast_array(
.with_timezone(Arc::clone(tz)),
))
}
- _ => Ok(cast_with_options(&array, to_type, &PARQUET_OPTIONS)?),
+ // If Arrow cast supports the cast, delegate the cast to Arrow
+ _ if can_cast_types(from_type, to_type) => {
+ Ok(cast_with_options(&array, to_type, &PARQUET_OPTIONS)?)
+ }
+ _ => Ok(array),
Review Comment:
Well it depends, for now we just ignore the casting as we cannot find a
proper handler leaving the data as it comes from Spark propagating the
responsibility to the caller.
returning Error also makes sense to identify such unsupported pairs of type
sooner than later by getting the error.
I dont have a strong opinion here, WDYT which one would serve better?
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