Fokko commented on code in PR #569:
URL: https://github.com/apache/iceberg-python/pull/569#discussion_r1594703680
##########
pyiceberg/table/__init__.py:
##########
@@ -434,6 +458,9 @@ def overwrite(
if table_arrow_schema != df.schema:
df = df.cast(table_arrow_schema)
+ with
self.update_snapshot(snapshot_properties=snapshot_properties).delete() as
delete_snapshot:
+ delete_snapshot.delete_by_predicate(overwrite_filter)
Review Comment:
If we need to delete a subset of the file, it will load the file, filter out
the rows, and write it again. So we're removing an old file, and writing it
again. Thus the overwrite
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