kevinjqliu commented on code in PR #1498:
URL: https://github.com/apache/iceberg-python/pull/1498#discussion_r1912524672
##########
tests/integration/test_add_files.py:
##########
@@ -616,13 +616,18 @@ def
test_add_files_with_timestamp_tz_ns_fails(session_catalog: Catalog, format_v
# add the parquet files as data files
with pytest.raises(
- TypeError,
- match=re.escape(
- "Iceberg does not yet support 'ns' timestamp precision. Use
'downcast-ns-timestamp-to-us-on-write' configuration property to automatically
downcast 'ns' to 'us' on write."
- ),
- ):
+ UnsupportedPyArrowTypeException,
+ match=re.escape("Column 'quux' has an unsupported type: timestamp[ns,
tz=UTC]"),
+ ) as exc_info:
tbl.add_files(file_paths=[file_path])
+ exception_cause = exc_info.value.__cause__
+ assert isinstance(exception_cause, TypeError)
+ assert (
+ "Iceberg does not yet support 'ns' timestamp precision. Use
'downcast-ns-timestamp-to-us-on-write' configuration property to automatically
downcast 'ns' to 'us' on write."
Review Comment:
I think for this error, we actually want to propagate it upwards. We want to
let the users know there is the `downcast-ns-timestamp-to-us-on-write`
configuration.
Maybe we can try reraising the underlying error to preserve its message
```
try:
result = visit_pyarrow(field_type, visitor)
except TypeError as e:
# Raise a custom exception while preserving the original error
message and traceback
raise UnsupportedPyArrowTypeException(
obj,
f"Column '{obj.name}' has an unsupported type: {field_type}"
) from e
```
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