diff --git a/src/common/inc/tdataformat.h b/src/common/inc/tdataformat.h
index 0d4e2c7afebc107c2706187bb655ec3431e9f186..4bd0b43e774d54a6ff3b79cb63996f6a91d504e0 100644
--- a/src/common/inc/tdataformat.h
+++ b/src/common/inc/tdataformat.h
@@ -609,7 +609,6 @@ typedef void *SMemRow;
 
 #define SMEM_ROW_DATA 0x0U      // SDataRow
 #define SMEM_ROW_KV 0x01U       // SKVRow
-#define SMEM_ROW_CONVERT 0x80U  // SMemRow convert flag
 
 #define KVRatioKV (0.2f)  // all bool
 #define KVRatioPredict (0.4f)
@@ -619,12 +618,10 @@ typedef void *SMemRow;
 #define memRowType(r) ((*(uint8_t *)(r)) & 0x01)
 
 #define memRowSetType(r, t) ((*(uint8_t *)(r)) = (t))  // set the total byte in case of dirty memory
-#define memRowSetConvert(r) ((*(uint8_t *)(r)) = (((*(uint8_t *)(r)) & 0x7F) | SMEM_ROW_CONVERT))  // highest bit
 #define isDataRowT(t) (SMEM_ROW_DATA == (((uint8_t)(t)) & 0x01))
 #define isDataRow(r) (SMEM_ROW_DATA == memRowType(r))
 #define isKvRowT(t) (SMEM_ROW_KV == (((uint8_t)(t)) & 0x01))
 #define isKvRow(r) (SMEM_ROW_KV == memRowType(r))
-#define isNeedConvertRow(r) (((*(uint8_t *)(r)) & 0x80) == SMEM_ROW_CONVERT)
 #define isConvertToKvRow(k, d) ((k) < ((d)*KVRatioConvert))
 #define isConvertToDataRow(k, d) ((k) > (d))