meta/tikv: optimise txn scan (#5314)

Signed-off-by: jiefenghuang <[email protected]>
juicedata · Nov 22, 2024 · c802d12 · c802d12
1 parent deb0fd1
commit c802d12
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/pkg/meta/tkv_tikv.go b/pkg/meta/tkv_tikv.go
@@ -119,7 +119,10 @@ func (tx *tikvTxn) gets(keys ...[]byte) [][]byte {
 }
 
 func (tx *tikvTxn) scan(begin, end []byte, keysOnly bool, handler func(k, v []byte) bool) {
-	tx.GetSnapshot().SetKeyOnly(keysOnly)
+	snap := tx.GetSnapshot()
+	snap.SetScanBatchSize(10240)
+	snap.SetNotFillCache(true)
+	snap.SetKeyOnly(keysOnly)
 	it, err := tx.Iter(begin, end)
 	if err != nil {
 		panic(err)