jqin61 commented on code in PR #555:
URL: https://github.com/apache/iceberg-python/pull/555#discussion_r1543793736
##########
pyiceberg/table/__init__.py:
##########
@@ -2526,25 +2537,44 @@ def _dataframe_to_data_files(
"""
from pyiceberg.io.pyarrow import bin_pack_arrow_table, write_file
- if len([spec for spec in table_metadata.partition_specs if spec.spec_id !=
0]) > 0:
- raise ValueError("Cannot write to partitioned tables")
-
counter = itertools.count(0)
write_uuid = write_uuid or uuid.uuid4()
-
target_file_size = PropertyUtil.property_as_int(
properties=table_metadata.properties,
property_name=TableProperties.WRITE_TARGET_FILE_SIZE_BYTES,
default=TableProperties.WRITE_TARGET_FILE_SIZE_BYTES_DEFAULT,
)
+ if target_file_size is None:
+ raise ValueError(
+ "Fail to get neither TableProperties.WRITE_TARGET_FILE_SIZE_BYTES
nor WRITE_TARGET_FILE_SIZE_BYTES_DEFAULT for writing target data file."
+ )
- # This is an iter, so we don't have to materialize everything every time
- # This will be more relevant when we start doing partitioned writes
- yield from write_file(
- io=io,
- table_metadata=table_metadata,
- tasks=iter([WriteTask(write_uuid, next(counter), batches) for batches
in bin_pack_arrow_table(df, target_file_size)]), # type: ignore
- )
+ if any(len(spec.fields) > 0 for spec in table_metadata.partition_specs):
Review Comment:
It seems the old line was not checking whether the table is partitioned but
was checking partition evolution?
```if len([spec for spec in table_metadata.partition_specs if spec.spec_id
!= 0]) > 0:```
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