syun64 commented on code in PR #728:
URL: https://github.com/apache/iceberg-python/pull/728#discussion_r1632294680
##########
pyiceberg/table/__init__.py:
##########
@@ -340,6 +340,34 @@ def set_properties(self, properties: Properties =
EMPTY_DICT, **kwargs: Any) ->
updates = properties or kwargs
return self._apply((SetPropertiesUpdate(updates=updates),))
+ def set_ref_snapshot(
+ self,
+ snapshot_id: int,
+ parent_snapshot_id: Optional[int],
+ ref_name: str,
+ type: str,
+ max_age_ref_ms: Optional[int] = None,
+ max_snapshot_age_ms: Optional[int] = None,
+ min_snapshots_to_keep: Optional[int] = None,
+ ) -> Transaction:
+ """Update a ref to a snapshot.
+
+ Returns:
+ The transaction with the set-snapshot-ref staged
+ """
+ updates = SetSnapshotRefUpdate(
+ snapshot_id=snapshot_id,
+ parent_snapshot_id=parent_snapshot_id,
+ ref_name=ref_name,
+ type=type,
+ max_age_ref_ms=max_age_ref_ms,
+ max_snapshot_age_ms=max_snapshot_age_ms,
+ min_snapshots_to_keep=min_snapshots_to_keep,
+ )
+
+ requirements = AssertRefSnapshotId(snapshot_id=parent_snapshot_id,
ref="main")
Review Comment:
Wouldn't we always want AssertTableUUID for this operation? When we apply
manage snapshots on a specific table, we always intend to add a snapshot ID or
update the snapshot ID of a ref branch (main, etc) based on the specific
instance of the table the client is aware of (which is tracked by the table
UUID).
I think adding AssertTableUUID will prevent the operation from succeeding
when there are concurrent table drop/create operations that could put the table
in a bad state -> https://github.com/apache/iceberg/pull/4322
I'm actually curious why this requirement is missing in the Java
implementation. Is it possible that it's being injected for any `SIMPLE`
TableUpdate types, including snapshot updates?
[UpdateRequirements.java:
forUpdateTable](https://github.com/apache/iceberg/blob/c7de6cb345995cb47312edbef6edae2f17fb8aba/core/src/main/java/org/apache/iceberg/UpdateRequirements.java#L50)
[RESTTableOperations.java: SIMPLE type
commit](https://github.com/apache/iceberg/blob/c7de6cb345995cb47312edbef6edae2f17fb8aba/core/src/main/java/org/apache/iceberg/rest/RESTTableOperations.java#L137)
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