Spark: Implement RollbackToSnapshotProcedure#1759
Conversation
...ensions/src/test/java/org/apache/iceberg/spark/extensions/TestManageSnapshotsProcedures.java
Outdated
Show resolved
Hide resolved
spark3/src/main/java/org/apache/iceberg/spark/procedures/BaseProcedure.java
Show resolved
Hide resolved
...ensions/src/test/java/org/apache/iceberg/spark/extensions/TestManageSnapshotsProcedures.java
Show resolved
Hide resolved
...k3-extensions/src/test/java/org/apache/iceberg/spark/extensions/SparkExtensionsTestBase.java
Show resolved
Hide resolved
| Snapshot secondSnapshot = table.currentSnapshot(); | ||
|
|
||
| List<Object[]> output = sql( | ||
| "CALL %s.system.rollback_to_snapshot(snapshot_id => %dL, namespace => '%s', table => '%s')", |
There was a problem hiding this comment.
Is %dL required or could it be %d? I think because of the casting that was added, it could be %d.
There was a problem hiding this comment.
It is not required, we have testRollbackToSnapshotWithQuotedIdentifiers for that. I don't think our cast logic is working there, though. I think Spark is smart enough to parse snapshot id as long since the value is too large to be int.
I'll add a test for the casting logic as soon as it applies.
...ensions/src/test/java/org/apache/iceberg/spark/extensions/TestManageSnapshotsProcedures.java
Show resolved
Hide resolved
spark3/src/main/java/org/apache/iceberg/spark/procedures/BaseProcedure.java
Outdated
Show resolved
Hide resolved
There was a problem hiding this comment.
Even in a private method, I don't think it is a good practice to use Scala Seq because of compatibility problems. It would be safer to pass this directly into a converter to get a List.
There was a problem hiding this comment.
Do you mean change the return type to List?
There was a problem hiding this comment.
I updated it to return an array.
spark3/src/main/java/org/apache/iceberg/spark/procedures/BaseProcedure.java
Outdated
Show resolved
Hide resolved
spark3/src/main/java/org/apache/iceberg/spark/procedures/RollbackToSnapshotProcedure.java
Outdated
Show resolved
Hide resolved
spark3/src/main/java/org/apache/iceberg/spark/procedures/RollbackToSnapshotProcedure.java
Outdated
Show resolved
Hide resolved
spark3/src/main/java/org/apache/iceberg/spark/procedures/RollbackToSnapshotProcedure.java
Outdated
Show resolved
Hide resolved
spark3/src/main/java/org/apache/iceberg/spark/procedures/RollbackToSnapshotProcedure.java
Outdated
Show resolved
Hide resolved
There was a problem hiding this comment.
It seems strange that the builder passes catalog to build, rather than withTableCatalog.
There was a problem hiding this comment.
Do you mean the overall approach or the method name?
There was a problem hiding this comment.
I'm assuming that there will be more options that will be passed to the builder, but there is just TableCatalog for now. I would expect this to support cases that don't need a TableCatalog, so it doesn't seem like something that we should tie to the build method. Instead, I'd use a withTableCatalog method and always build the procedure with build()
There was a problem hiding this comment.
Let me rework this part.
There was a problem hiding this comment.
Updated. Let me know what you think, @rdblue.
spark3/src/main/java/org/apache/iceberg/spark/procedures/RollbackToSnapshotProcedure.java
Outdated
Show resolved
Hide resolved
...sions/src/test/java/org/apache/iceberg/spark/extensions/TestRollbackToSnapshotProcedure.java
Show resolved
Hide resolved
| long snapshotId = args.getLong(2); | ||
|
|
||
| return modifyIcebergTable(namespace, tableName, table -> { | ||
| Snapshot previousSnapshot = table.currentSnapshot(); |
There was a problem hiding this comment.
We may need to reason about concurrent operations on this table instance if caching is enabled. Here, there is a possibility there will be an operation in between we got previousSnapshot and before we committed so the output may not be precise. It may be even more important in other procedures later.
@rdblue, thoughts?
There was a problem hiding this comment.
We can add a validation to set requiredCurrentSnapshotId in the operation. Right now, we always roll back as long as it is an ancestor of the current state. Can be done as a follow-up though.
| @Override | ||
| public T build() { | ||
| return doBuild(); | ||
| } |
There was a problem hiding this comment.
Why not make build abstract?
2 participants
This PR implements a procedure to rollback to a given snapshot id.
Resovles #1592.