lawofcycles commented on code in PR #3320:
URL: https://github.com/apache/iceberg-python/pull/3320#discussion_r3331522515
##########
pyiceberg/table/update/snapshot.py:
##########
@@ -499,6 +548,62 @@ def files_affected(self) -> bool:
"""Indicate if any manifest-entries can be dropped."""
return len(self._deleted_entries()) > 0
+ def _refresh_for_retry(self) -> None:
+ """Reset state for a retry attempt, clearing the cached delete
computation."""
+ super()._refresh_for_retry()
+ # Clear @cached_property by removing it from the instance __dict__.
+ # _compute_deletes depends on _parent_snapshot_id which changes on
retry.
+ if "_compute_deletes" in self.__dict__:
+ del self.__dict__["_compute_deletes"]
+
+ def _validate_concurrency(self) -> None:
+ """Validate that concurrent changes do not conflict with this delete.
+
+ Note: This method is intentionally duplicated in _OverwriteFiles
rather than
+ extracted to the base class. While the logic is currently identical,
Java Iceberg's
+ BaseOverwriteFiles and BaseRowDelta have divergent validation. Keeping
them separate
+ makes it easier to add RowDelta-specific validation in the future.
+ """
+ from pyiceberg.table import TableProperties
+ from pyiceberg.table.snapshots import IsolationLevel
+ from pyiceberg.table.update.validate import (
+ _validate_added_data_files,
+ _validate_deleted_data_files,
+ _validate_no_new_delete_files,
+ _validate_no_new_deletes_for_data_files,
+ )
+
+ if self._parent_snapshot_id is None:
+ return
+
+ table = self._transaction._table
+ parent_snapshot =
table.metadata.snapshot_by_id(self._parent_snapshot_id)
+ if parent_snapshot is None:
Review Comment:
Good catch. Now raises ValidationException when the ID is non-null but
unresolvable. The `_parent_snapshot_id is None` early return stays for the
empty-table case.
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