Remove col_session_data usages

node/core/approval-voting/src/approval_db/v1/mod.rs

@@ -154,8 +154,6 @@ pub type Bitfield = BitVec<u8, BitOrderLsb0>;
 pub struct Config {
 	/// The column family in the database where data is stored.
 	pub col_approval_data: u32,
-	/// The column of the database where rolling session window data is stored.
-	pub col_session_data: u32,
 }
 
 /// Details pertaining to our assignment on a block.

node/core/approval-voting/src/lib.rs

@@ -364,10 +364,8 @@ impl ApprovalVotingSubsystem {
 	/// Revert to the block corresponding to the specified `hash`.
 	/// The operation is not allowed for blocks older than the last finalized one.
 	pub fn revert_to(&self, hash: Hash) -> Result<(), SubsystemError> {
-		let config = approval_db::v1::Config {
-			col_approval_data: self.db_config.col_approval_data,
-			col_session_data: self.db_config.col_session_data,
-		};
+		let config =
+			approval_db::v1::Config { col_approval_data: self.db_config.col_approval_data };
 		let mut backend = approval_db::v1::DbBackend::new(self.db.clone(), config);
 		let mut overlay = OverlayedBackend::new(&backend);
 

node/core/dispute-coordinator/src/db/v1.rs

@@ -206,8 +206,6 @@ fn candidate_votes_session_prefix(session: SessionIndex) -> [u8; 15 + 4] {
 pub struct ColumnConfiguration {
 	/// The column in the key-value DB where data is stored.
 	pub col_dispute_data: u32,
-	/// The column in the key-value DB where session data is stored.
-	pub col_session_data: u32,
 }
 
 /// Tracked votes on candidates, for the purposes of dispute resolution.
@@ -378,7 +376,7 @@ mod tests {
 		let db = kvdb_memorydb::create(1);
 		let db = polkadot_node_subsystem_util::database::kvdb_impl::DbAdapter::new(db, &[0]);
 		let store = Arc::new(db);
-		let config = ColumnConfiguration { col_dispute_data: 0, col_session_data: 1 };
+		let config = ColumnConfiguration { col_dispute_data: 0 };
 		DbBackend::new(store, config, Metrics::default())
 	}
 

node/core/dispute-coordinator/src/lib.rs

@@ -127,16 +127,11 @@ pub struct DisputeCoordinatorSubsystem {
 pub struct Config {
 	/// The data column in the store to use for dispute data.
 	pub col_dispute_data: u32,
-	/// The data column in the store to use for session data.
-	pub col_session_data: u32,
 }
 
 impl Config {
 	fn column_config(&self) -> db::v1::ColumnConfiguration {
-		db::v1::ColumnConfiguration {
-			col_dispute_data: self.col_dispute_data,
-			col_session_data: self.col_session_data,
-		}
+		db::v1::ColumnConfiguration { col_dispute_data: self.col_dispute_data }
 	}
 }
 

node/service/src/lib.rs

@@ -1515,7 +1515,6 @@ fn revert_chain_selection(db: Arc<dyn Database>, hash: Hash) -> sp_blockchain::R
 fn revert_approval_voting(db: Arc<dyn Database>, hash: Hash) -> sp_blockchain::Result<()> {
 	let config = approval_voting_subsystem::Config {
 		col_approval_data: parachains_db::REAL_COLUMNS.col_approval_data,
-		col_session_data: parachains_db::REAL_COLUMNS.col_session_window_data,
 		slot_duration_millis: Default::default(),
 	};