feat(en): add manual vacuum step in db pruning (#1652)

Signed-off-by: tomg10 <lemures64@gmail.com>

core/lib/dal/src/pruning_dal.rs

@@ -404,7 +404,7 @@ impl PruningDal<'_, '_> {
             i64::from(last_miniblock_to_prune.0),
             PruneType::Hard as PruneType
         )
-        .instrument("soft_prune_batches_range#insert_pruning_log")
+        .instrument("hard_prune_batches_range#insert_pruning_log")
         .with_arg("last_l1_batch_to_prune", &last_l1_batch_to_prune)
         .with_arg("last_miniblock_to_prune", &last_miniblock_to_prune)
         .with_arg("prune_type", &PruneType::Hard)
@@ -414,4 +414,25 @@ impl PruningDal<'_, '_> {
 
         Ok(())
     }
+
+    // This method must be separate as VACUUM is not supported inside a transaction
+    pub async fn run_vacuum_after_hard_pruning(&mut self) -> DalResult<()> {
+        sqlx::query!(
+            r#"
+            VACUUM l1_batches,
+            miniblocks,
+            storage_logs,
+            events,
+            call_traces,
+            l2_to_l1_logs,
+            transactions
+            "#,
+        )
+        .instrument("hard_prune_batches_range#vacuum")
+        .report_latency()
+        .execute(self.storage)
+        .await?;
+
+        Ok(())
+    }
 }

core/lib/zksync_core/src/db_pruner/mod.rs

@@ -141,6 +141,12 @@ impl DbPruner {
 
         transaction.commit().await?;
 
+        let mut storage = pool.connection_tagged("db_pruner").await?;
+        storage
+            .pruning_dal()
+            .run_vacuum_after_hard_pruning()
+            .await?;
+
         let latency = latency.observe();
         tracing::info!(
             "Hard pruned db l1_batches up to {} and miniblocks up to {}, operation took {:?}",