KVTxn Set not support TTL

[newcworld]

// Set sets the value for key k as v into kv store.
// v must NOT be nil or empty, otherwise it returns ErrCannotSetNilValue.
func (txn *KVTxn) Set(k []byte, v []byte) error {
	txn.setCnt++
	return txn.us.GetMemBuffer().Set(k, v)
}

Whether I can set kv in tx with TTL?

[disksing]

No, only rawkv supports TTL.