A split-brain scenario occurs when multiple systems believe they own the authoritative state of the same resource. In Iceberg recovery, registering identical exported metadata in multiple catalogs and permitting writes in more than one environment can create divergent table states and metadata corruption. section 11.3.3
Treat registered metadata as read-only for inspection, validation, or testing. When independent ownership is required, clone the table by copying data and regenerating metadata, rather than sharing writable metadata. Delay destructive operations until replicated metadata has caught up. section 11.3.3 section 11.3.3
Cross-environment validation
A team exports metadata.json from production and uses register_table in a test catalog to reproduce a table state. The test registration remains read-only; otherwise, production and test could concurrently modify the same Iceberg table state. section 11.3.3
