Like https://github.com/pingcap/tispark/commit/67255827feb8ca3f6d3fd9813e88106b0930cc4d#diff-5a8ea9c46df503722c7748cb9232b375bb28a5ab5524756fec998021f3aeca7e we need support clustered index. https://docs.pingcap.com/zh/tidb/stable/clustered-indexes/#%E8%81%9A%E7%B0%87%E7%B4%A2%E5%BC%95
