pub(crate) fn spawn_group_committer(
rx: UnboundedReceiver<TableWriteCmd>,
oracle: Arc<dyn TimestampOracle<Timestamp> + Send + Sync>,
table_write_handle: Arc<dyn TableWriteHandle>,
catalog_upper: CatalogUpperHandle,
internal_cmd_tx: UnboundedSender<Message>,
now: NowFn,
metrics: Metrics,
dyncfgs: &ConfigSet,
)