Hi, What do you mean by "possible deadlock issue"?
- IOW is stuck trying to acquire a write lock (could you check this in HS2 logs)? - What is the value of `hive.txn.ext.locking.enabled` config? If 'false', pessimistic locking won't be enabled on iceberg tables. - Are you using any Hive-managed tables as input for IOW? PS: `DbLockManager` provides Hive locking for Iceberg tables, meaning you need to employ `DbTxnManager`, which is the default for Hive-4.x Are you using `DummyTxnManager` with `EmbeddedLockManager`? Note, if you want to ensure data correctness between concurrent Insert & IOW submitted through Hive & Trino, you should also create an HMS Lock in Trino and reload the snapshot, otherwise, data correctness is not guaranteed. Regards, Denys
