diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 81df1196f9..7eba0cd736 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,15 +1,19 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
+# Base compile
 ADD_SUBDIRECTORY(os)
+ADD_SUBDIRECTORY(thirdparty)
+
+ADD_SUBDIRECTORY(common)
 ADD_SUBDIRECTORY(util)
 ADD_SUBDIRECTORY(rpc)
 ADD_SUBDIRECTORY(client)
+ADD_SUBDIRECTORY(query)
 ADD_SUBDIRECTORY(kit)
 ADD_SUBDIRECTORY(plugins)
 ADD_SUBDIRECTORY(sdb)
 ADD_SUBDIRECTORY(mnode)
-ADD_SUBDIRECTORY(vnode)
-ADD_SUBDIRECTORY(dnode)
-ADD_SUBDIRECTORY(query)
+# ADD_SUBDIRECTORY(vnode)
+# ADD_SUBDIRECTORY(dnode)
 #ADD_SUBDIRECTORY(connector/jdbc)
diff --git a/src/client/CMakeLists.txt b/src/client/CMakeLists.txt
index 827c65435d..a64f0581fb 100644
--- a/src/client/CMakeLists.txt
+++ b/src/client/CMakeLists.txt
@@ -15,13 +15,13 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
 
   # set the static lib name
   ADD_LIBRARY(taos_static STATIC ${SRC})
-  TARGET_LINK_LIBRARIES(taos_static query trpc tutil pthread m rt)
+  TARGET_LINK_LIBRARIES(taos_static common query trpc tutil pthread m rt)
   SET_TARGET_PROPERTIES(taos_static PROPERTIES OUTPUT_NAME "taos_static")
   SET_TARGET_PROPERTIES(taos_static PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 
   # generate dynamic library (*.so)
   ADD_LIBRARY(taos SHARED ${SRC})
-  TARGET_LINK_LIBRARIES(taos trpc tutil pthread m rt)
+  TARGET_LINK_LIBRARIES(taos common trpc tutil pthread m rt)
   SET_TARGET_PROPERTIES(taos PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 
   #set version of .so
diff --git a/src/client/inc/tscSQLParser.h b/src/client/inc/tscSQLParser.h
index 87c193de75..c7f8ba06e8 100644
--- a/src/client/inc/tscSQLParser.h
+++ b/src/client/inc/tscSQLParser.h
@@ -23,7 +23,7 @@ extern "C" {
 #include "taos.h"
 #include "taosmsg.h"
 #include "ttokendef.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tvariant.h"
 #include "qsqlparser.h"
 
diff --git a/src/client/src/tscFunctionImpl.c b/src/client/src/tscFunctionImpl.c
index 88b1fc0c28..9c4f7e9c55 100644
--- a/src/client/src/tscFunctionImpl.c
+++ b/src/client/src/tscFunctionImpl.c
@@ -25,7 +25,7 @@
 #include "tscompression.h"
 #include "tsqlfunction.h"
 #include "ttime.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 #include "tpercentile.h"
 
diff --git a/src/client/src/tscLocal.c b/src/client/src/tscLocal.c
index ab57719d09..89b43816c8 100644
--- a/src/client/src/tscLocal.c
+++ b/src/client/src/tscLocal.c
@@ -19,7 +19,7 @@
 #include "tcache.h"
 #include "tscUtil.h"
 #include "tsclient.h"
-#include "ttypes.h"
+#include "taosdef.h"
 
 #include "textbuffer.h"
 #include "tscSecondaryMerge.h"
diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index b54600f641..4c9f99b932 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -25,7 +25,7 @@
 #include "tschemautil.h"
 #include "tsclient.h"
 #include "ttokendef.h"
-#include "ttypes.h"
+#include "taosdef.h"
 
 #include "tlog.h"
 #include "tstoken.h"
diff --git a/src/client/src/tscSchemaUtil.c b/src/client/src/tscSchemaUtil.c
index 250e296e53..d412ac18c8 100644
--- a/src/client/src/tscSchemaUtil.c
+++ b/src/client/src/tscSchemaUtil.c
@@ -17,7 +17,7 @@
 #include "taosmsg.h"
 #include "tschemautil.h"
 #include "ttokendef.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 
 bool isValidSchema(struct SSchema* pSchema, int32_t numOfCols) {
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
new file mode 100644
index 0000000000..5c5366c53f
--- /dev/null
+++ b/src/common/CMakeLists.txt
@@ -0,0 +1,9 @@
+aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR}/src SOURCE_LIST)
+
+add_library(common ${SOURCE_LIST})
+target_include_directories(
+    common 
+        PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/inc
+        PUBLIC ${CMAKE_SOURCE_DIR}/src/inc
+        PUBLIC ${CMAKE_SOURCE_DIR}/src/os/linux/inc
+        )
\ No newline at end of file
diff --git a/src/vnode/common/inc/dataformat.h b/src/common/inc/dataformat.h
similarity index 94%
rename from src/vnode/common/inc/dataformat.h
rename to src/common/inc/dataformat.h
index 43eb1ad103..f004380336 100644
--- a/src/vnode/common/inc/dataformat.h
+++ b/src/common/inc/dataformat.h
@@ -17,8 +17,9 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 
-#include "schema.h"
+// #include "schema.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -43,9 +44,9 @@ typedef void *SDataRow;
 #define dataRowCpy(dst, r) memcpy((dst), (r), dataRowLen(r))
 
 SDataRow tdNewDataRow(int32_t bytes);
-SDataRow tdNewDdataFromSchema(SSchema *pSchema);
+// SDataRow tdNewDdataFromSchema(SSchema *pSchema);
 void     tdFreeDataRow(SDataRow row);
-int32_t  tdAppendColVal(SDataRow row, void *value, SColumn *pCol, int32_t suffixOffset);
+// int32_t  tdAppendColVal(SDataRow row, void *value, SColumn *pCol, int32_t suffixOffset);
 void     tdDataRowCpy(void *dst, SDataRow row);
 void     tdDataRowReset(SDataRow row);
 SDataRow tdDataRowDup(SDataRow row);
diff --git a/src/vnode/common/src/dataformat.c b/src/common/src/dataformat.c
similarity index 66%
rename from src/vnode/common/src/dataformat.c
rename to src/common/src/dataformat.c
index f8f794e882..fe868f91d5 100644
--- a/src/vnode/common/src/dataformat.c
+++ b/src/common/src/dataformat.c
@@ -21,10 +21,10 @@ SDataRow tdNewDataRow(int32_t bytes) {
   return row;
 }
 
-SDataRow tdNewDdataFromSchema(SSchema *pSchema) {
-  int32_t bytes = tdMaxRowDataBytes(pSchema);
-  return tdNewDataRow(bytes);
-}
+// SDataRow tdNewDdataFromSchema(SSchema *pSchema) {
+//   int32_t bytes = tdMaxRowDataBytes(pSchema);
+//   return tdNewDataRow(bytes);
+// }
 
 /**
  * Free the SDataRow object
@@ -45,34 +45,34 @@ void tdFreeDataRow(SDataRow row) {
  * 
  * @return 0 for success and -1 for failure
  */
-int32_t tdAppendColVal(SDataRow row, void *value, SColumn *pCol, int32_t suffixOffset) {
-  int32_t offset;
+// int32_t tdAppendColVal(SDataRow row, void *value, SColumn *pCol, int32_t suffixOffset) {
+//   int32_t offset;
 
-  switch (pCol->type) {
-    case TD_DATATYPE_BOOL:
-    case TD_DATATYPE_TINYINT:
-    case TD_DATATYPE_SMALLINT:
-    case TD_DATATYPE_INT:
-    case TD_DATATYPE_BIGINT:
-    case TD_DATATYPE_FLOAT:
-    case TD_DATATYPE_DOUBLE:
-    case TD_DATATYPE_TIMESTAMP:
-      memcpy(dataRowIdx(row, pCol->offset + sizeof(int32_t)), value, rowDataLen[pCol->type]);
-      if (dataRowLen(row) < suffixOffset + sizeof(int32_t))
-        dataRowSetLen(row, dataRowLen(row) + rowDataLen[pCol->type]);
-      break;
-    case TD_DATATYPE_VARCHAR:
-      offset = dataRowLen(row) > suffixOffset ? dataRowLen(row) : suffixOffset;
-      memcpy(dataRowIdx(row, pCol->offset+sizeof(int32_t)), (void *)(&offset), sizeof(offset));
-    case TD_DATATYPE_NCHAR:
-    case TD_DATATYPE_BINARY:
-      break;
-    default:
-      return -1;
-  }
+//   switch (pCol->type) {
+//     case TD_DATATYPE_BOOL:
+//     case TD_DATATYPE_TINYINT:
+//     case TD_DATATYPE_SMALLINT:
+//     case TD_DATATYPE_INT:
+//     case TD_DATATYPE_BIGINT:
+//     case TD_DATATYPE_FLOAT:
+//     case TD_DATATYPE_DOUBLE:
+//     case TD_DATATYPE_TIMESTAMP:
+//       memcpy(dataRowIdx(row, pCol->offset + sizeof(int32_t)), value, rowDataLen[pCol->type]);
+//       if (dataRowLen(row) < suffixOffset + sizeof(int32_t))
+//         dataRowSetLen(row, dataRowLen(row) + rowDataLen[pCol->type]);
+//       break;
+//     case TD_DATATYPE_VARCHAR:
+//       offset = dataRowLen(row) > suffixOffset ? dataRowLen(row) : suffixOffset;
+//       memcpy(dataRowIdx(row, pCol->offset+sizeof(int32_t)), (void *)(&offset), sizeof(offset));
+//     case TD_DATATYPE_NCHAR:
+//     case TD_DATATYPE_BINARY:
+//       break;
+//     default:
+//       return -1;
+//   }
 
-  return 0;
-}
+//   return 0;
+// }
 
 /**
  * Copy a data row to a destination
diff --git a/src/util/src/ttypes.c b/src/common/src/ttypes.c
similarity index 99%
rename from src/util/src/ttypes.c
rename to src/common/src/ttypes.c
index 5fd679dccf..0d4ca30e35 100644
--- a/src/util/src/ttypes.c
+++ b/src/common/src/ttypes.c
@@ -12,12 +12,11 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
-#include "ttypes.h"
 #include "os.h"
-#include "taos.h"
+
 #include "taosdef.h"
 #include "ttokendef.h"
-#include "tutil.h"
+// #include "tutil.h"
 
 tDataTypeDescriptor tDataTypeDesc[11] = {
   {TSDB_DATA_TYPE_NULL,      6, 1,            "NOTYPE"},
diff --git a/src/inc/taos.h b/src/inc/taos.h
index d9db79fbcb..4a815d8ee5 100644
--- a/src/inc/taos.h
+++ b/src/inc/taos.h
@@ -29,18 +29,6 @@ typedef void    TAOS_SUB;
 typedef void    TAOS_STREAM;
 typedef void    TAOS_STMT;
 
-#define TSDB_DATA_TYPE_NULL       0
-#define TSDB_DATA_TYPE_BOOL       1     // 1 bytes
-#define TSDB_DATA_TYPE_TINYINT    2     // 1 byte
-#define TSDB_DATA_TYPE_SMALLINT   3     // 2 bytes
-#define TSDB_DATA_TYPE_INT        4     // 4 bytes
-#define TSDB_DATA_TYPE_BIGINT     5     // 8 bytes
-#define TSDB_DATA_TYPE_FLOAT      6     // 4 bytes
-#define TSDB_DATA_TYPE_DOUBLE     7     // 8 bytes
-#define TSDB_DATA_TYPE_BINARY     8     // string
-#define TSDB_DATA_TYPE_TIMESTAMP  9     // 8 bytes
-#define TSDB_DATA_TYPE_NCHAR      10    // multibyte string
-
 typedef enum {
   TSDB_OPTION_LOCALE,
   TSDB_OPTION_CHARSET,
diff --git a/src/inc/taosdef.h b/src/inc/taosdef.h
index 7a8cd28428..8147f6b9bc 100644
--- a/src/inc/taosdef.h
+++ b/src/inc/taosdef.h
@@ -21,7 +21,7 @@ extern "C" {
 #endif
 
 #include <stdint.h>
-#include "tglobalcfg.h"
+#include <stdbool.h>
 
 #define TSDB__packed
 
@@ -31,6 +31,42 @@ extern "C" {
 #define TSKEY int64_t
 #endif
 
+// Data type definition
+#define TSDB_DATA_TYPE_NULL       0     // 1 bytes
+#define TSDB_DATA_TYPE_BOOL       1     // 1 bytes
+#define TSDB_DATA_TYPE_TINYINT    2     // 1 byte
+#define TSDB_DATA_TYPE_SMALLINT   3     // 2 bytes
+#define TSDB_DATA_TYPE_INT        4     // 4 bytes
+#define TSDB_DATA_TYPE_BIGINT     5     // 8 bytes
+#define TSDB_DATA_TYPE_FLOAT      6     // 4 bytes
+#define TSDB_DATA_TYPE_DOUBLE     7     // 8 bytes
+#define TSDB_DATA_TYPE_BINARY     8     // string
+#define TSDB_DATA_TYPE_TIMESTAMP  9     // 8 bytes
+#define TSDB_DATA_TYPE_NCHAR      10    // unicode string
+
+// Bytes for each type.
+#define CHAR_BYTES   sizeof(char)
+#define SHORT_BYTES  sizeof(short)
+#define INT_BYTES    sizeof(int)
+#define LONG_BYTES   sizeof(int64_t)
+#define FLOAT_BYTES  sizeof(float)
+#define DOUBLE_BYTES sizeof(double)
+
+// NULL definition
+#define TSDB_DATA_BOOL_NULL             0x02
+#define TSDB_DATA_TINYINT_NULL          0x80
+#define TSDB_DATA_SMALLINT_NULL         0x8000
+#define TSDB_DATA_INT_NULL              0x80000000
+#define TSDB_DATA_BIGINT_NULL           0x8000000000000000L
+
+#define TSDB_DATA_FLOAT_NULL            0x7FF00000              // it is an NAN
+#define TSDB_DATA_DOUBLE_NULL           0x7FFFFF0000000000L     // an NAN
+#define TSDB_DATA_NCHAR_NULL            0xFFFFFFFF
+#define TSDB_DATA_BINARY_NULL           0xFF
+
+#define TSDB_DATA_NULL_STR              "NULL"
+#define TSDB_DATA_NULL_STR_L            "null"
+
 #define TSDB_TRUE 1
 #define TSDB_FALSE 0
 #define TSDB_OK 0
@@ -44,16 +80,6 @@ extern "C" {
 #define TSDB_TIME_PRECISION_MILLI_STR "ms"
 #define TSDB_TIME_PRECISION_MICRO_STR "us"
 
-#define TSDB_DATA_TYPE_BOOL       1     // 1 bytes
-#define TSDB_DATA_TYPE_TINYINT    2     // 1 byte
-#define TSDB_DATA_TYPE_SMALLINT   3     // 2 bytes
-#define TSDB_DATA_TYPE_INT        4     // 4 bytes
-#define TSDB_DATA_TYPE_BIGINT     5     // 8 bytes
-#define TSDB_DATA_TYPE_FLOAT      6     // 4 bytes
-#define TSDB_DATA_TYPE_DOUBLE     7     // 8 bytes
-#define TSDB_DATA_TYPE_BINARY     8     // string
-#define TSDB_DATA_TYPE_TIMESTAMP  9     // 8 bytes
-#define TSDB_DATA_TYPE_NCHAR      10    // unicode string
 
 #define TSDB_KEYSIZE              sizeof(TSKEY)
 
@@ -64,6 +90,48 @@ extern "C" {
 #endif
 //#define TSDB_CHAR_TERMINATED_SPACE 1
 
+#define GET_INT8_VAL(x)   (*(int8_t *)(x))
+#define GET_INT16_VAL(x)  (*(int16_t *)(x))
+#define GET_INT32_VAL(x)  (*(int32_t *)(x))
+#define GET_INT64_VAL(x)  (*(int64_t *)(x))
+#ifdef _TD_ARM_32_
+  #define GET_FLOAT_VAL(x)  taos_align_get_float(x)
+  #define GET_DOUBLE_VAL(x) taos_align_get_double(x)
+
+  float  taos_align_get_float(const char* pBuf);
+  double taos_align_get_double(const char* pBuf);
+
+  //#define __float_align_declear()  float __underlyFloat = 0.0;
+  //#define __float_align_declear()
+  //#define GET_FLOAT_VAL_ALIGN(x) (*(int32_t*)&(__underlyFloat) = *(int32_t*)(x); __underlyFloat);
+  // notes: src must be float or double type variable !!!
+  #define SET_FLOAT_VAL_ALIGN(dst, src) (*(int32_t*) dst = *(int32_t*)src);
+  #define SET_DOUBLE_VAL_ALIGN(dst, src) (*(int64_t*) dst = *(int64_t*)src);
+#else
+  #define GET_FLOAT_VAL(x)  (*(float *)(x))
+  #define GET_DOUBLE_VAL(x) (*(double *)(x))
+#endif
+
+typedef struct tDataTypeDescriptor {
+  int16_t nType;
+  int16_t nameLen;
+  int32_t nSize;
+  char *  aName;
+} tDataTypeDescriptor;
+
+extern tDataTypeDescriptor tDataTypeDesc[11];
+#define POINTER_BYTES sizeof(void *)  // 8 by default  assert(sizeof(ptrdiff_t) == sizseof(void*)
+
+bool isValidDataType(int32_t type, int32_t length);
+bool isNull(const char *val, int32_t type);
+
+void setNull(char *val, int32_t type, int32_t bytes);
+void setNullN(char *val, int32_t type, int32_t bytes, int32_t numOfElems);
+
+void assignVal(char *val, const char *src, int32_t len, int32_t type);
+void tsDataSwap(void *pLeft, void *pRight, int32_t type, int32_t size);
+
+// TODO: check if below is necessary
 #define TSDB_RELATION_INVALID     0
 #define TSDB_RELATION_LESS        1
 #define TSDB_RELATION_LARGE       2
diff --git a/src/kit/shell/src/shellEngine.c b/src/kit/shell/src/shellEngine.c
index a4a589d55c..61fdb424e5 100644
--- a/src/kit/shell/src/shellEngine.c
+++ b/src/kit/shell/src/shellEngine.c
@@ -21,7 +21,7 @@
 #include "shellCommand.h"
 #include "ttime.h"
 #include "tutil.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "taoserror.h"
 
 #include <regex.h>
diff --git a/src/query/inc/tast.h b/src/query/inc/tast.h
index 3cb483a91b..1e89ffb49d 100644
--- a/src/query/inc/tast.h
+++ b/src/query/inc/tast.h
@@ -23,7 +23,7 @@ extern "C" {
 #include "os.h"
 
 #include "taosmsg.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tvariant.h"
 
 struct tSQLBinaryExpr;
diff --git a/src/query/inc/tsqlfunction.h b/src/query/inc/tsqlfunction.h
index dc5f284efa..27bce71300 100644
--- a/src/query/inc/tsqlfunction.h
+++ b/src/query/inc/tsqlfunction.h
@@ -24,7 +24,7 @@ extern "C" {
 #include <stdint.h>
 
 #include "trpc.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tvariant.h"
 
 #define TSDB_FUNC_INVALID_ID  -1
diff --git a/src/query/inc/tvariant.h b/src/query/inc/tvariant.h
index f54a3a4348..7ed5aa8dbe 100644
--- a/src/query/inc/tvariant.h
+++ b/src/query/inc/tvariant.h
@@ -16,6 +16,8 @@
 #ifndef TDENGINE_TVARIANT_H
 #define TDENGINE_TVARIANT_H
 
+#include "tstoken.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/src/query/src/textbuffer.c b/src/query/src/textbuffer.c
index 8ce090d335..056fe80858 100644
--- a/src/query/src/textbuffer.c
+++ b/src/query/src/textbuffer.c
@@ -19,7 +19,7 @@
 #include "tlog.h"
 #include "tsqlfunction.h"
 #include "ttime.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 
 #define COLMODEL_GET_VAL(data, schema, allrow, rowId, colId) \
diff --git a/src/query/src/tinterpolation.c b/src/query/src/tinterpolation.c
index cb7c8854ce..1a9da44788 100644
--- a/src/query/src/tinterpolation.c
+++ b/src/query/src/tinterpolation.c
@@ -18,7 +18,7 @@
 #include "textbuffer.h"
 #include "tinterpolation.h"
 #include "tsqlfunction.h"
-#include "ttypes.h"
+#include "taosdef.h"
 
 #define INTERPOL_IS_ASC_INTERPOL(interp) ((interp)->order == TSQL_SO_ASC)
 
diff --git a/src/query/src/tpercentile.c b/src/query/src/tpercentile.c
index a5c074839c..6e1c28c516 100644
--- a/src/query/src/tpercentile.c
+++ b/src/query/src/tpercentile.c
@@ -18,7 +18,7 @@
 #include "taosmsg.h"
 #include "taosdef.h"
 #include "tlog.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tpercentile.h"
 
 tExtMemBuffer *releaseBucketsExceptFor(tMemBucket *pMemBucket, int16_t segIdx, int16_t slotIdx) {
diff --git a/src/query/src/tscAst.c b/src/query/src/tscAst.c
index 70fda9bd93..7be583a5ea 100644
--- a/src/query/src/tscAst.c
+++ b/src/query/src/tscAst.c
@@ -24,7 +24,7 @@
 #include "tsqlfunction.h"
 #include "tstoken.h"
 #include "ttokendef.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 #include "qsqlparser.h"
 
diff --git a/src/query/src/tscSQLParserImpl.c b/src/query/src/tscSQLParserImpl.c
index 0a76b867f2..e4067d470f 100644
--- a/src/query/src/tscSQLParserImpl.c
+++ b/src/query/src/tscSQLParserImpl.c
@@ -22,7 +22,7 @@
 #include "tstoken.h"
 #include "ttime.h"
 #include "ttokendef.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 
 int32_t tSQLParse(SSqlInfo *pSQLInfo, const char *pStr) {
diff --git a/src/query/src/tscSyntaxtreefunction.c b/src/query/src/tscSyntaxtreefunction.c
index 3fe43d9c1e..e3c00ed59d 100644
--- a/src/query/src/tscSyntaxtreefunction.c
+++ b/src/query/src/tscSyntaxtreefunction.c
@@ -16,7 +16,7 @@
 #include "os.h"
 
 #include "tscSyntaxtreefunction.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 
 #define ARRAY_LIST_OP(left, right, _left_type, _right_type, len1, len2, out, op, _res_type, _ord)     \
diff --git a/src/query/src/ttokenizer.c b/src/query/src/ttokenizer.c
index c53debcb45..f43d344ca3 100644
--- a/src/query/src/ttokenizer.c
+++ b/src/query/src/ttokenizer.c
@@ -19,7 +19,7 @@
 #include "shash.h"
 #include "tstoken.h"
 #include "ttokendef.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 
 // All the keywords of the SQL language are stored in a hash table
diff --git a/src/query/src/tvariant.c b/src/query/src/tvariant.c
index 8c8887ca2e..c9168ab252 100644
--- a/src/query/src/tvariant.c
+++ b/src/query/src/tvariant.c
@@ -19,10 +19,10 @@
 #include "shash.h"
 #include "tstoken.h"
 #include "ttokendef.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 #include "tvariant.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "taos.h"
 
 // todo support scientific expression number and oct number
diff --git a/src/thirdparty/CMakeLists.txt b/src/thirdparty/CMakeLists.txt
new file mode 100644
index 0000000000..9958e1e28c
--- /dev/null
+++ b/src/thirdparty/CMakeLists.txt
@@ -0,0 +1,4 @@
+aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR}/src SOURCE_LIST)
+
+add_library(thirdparty ${SOURCE_LIST})
+target_include_directories(thirdparty PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/inc)
\ No newline at end of file
diff --git a/src/util/inc/lz4.h b/src/thirdparty/inc/lz4.h
similarity index 100%
rename from src/util/inc/lz4.h
rename to src/thirdparty/inc/lz4.h
diff --git a/src/util/src/lz4.c b/src/thirdparty/src/lz4.c
similarity index 100%
rename from src/util/src/lz4.c
rename to src/thirdparty/src/lz4.c
diff --git a/src/util/CMakeLists.txt b/src/util/CMakeLists.txt
index 9cca2f2db1..67ecf39f1b 100644
--- a/src/util/CMakeLists.txt
+++ b/src/util/CMakeLists.txt
@@ -8,7 +8,7 @@ INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   AUX_SOURCE_DIRECTORY(src SRC)
   ADD_LIBRARY(tutil ${SRC})
-  TARGET_LINK_LIBRARIES(tutil pthread os m rt)
+  TARGET_LINK_LIBRARIES(tutil thirdparty pthread os m rt)
   IF (TD_CLUSTER) 
     ADD_DEFINITIONS(-DUSE_LIBICONV)
     TARGET_LINK_LIBRARIES(tutil iconv)
@@ -68,7 +68,7 @@ ELSEIF (TD_WINDOWS_64)
   LIST(APPEND SRC ./src/tutil.c)
   LIST(APPEND SRC ./src/version.c)
   ADD_LIBRARY(tutil ${SRC}) 
-  TARGET_LINK_LIBRARIES(tutil iconv regex pthread os winmm IPHLPAPI ws2_32)
+  TARGET_LINK_LIBRARIES(tutil thirdparty iconv regex pthread os winmm IPHLPAPI ws2_32)
 ELSEIF(TD_DARWIN_64)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   LIST(APPEND SRC ./src/hash.c)
@@ -105,7 +105,7 @@ ELSEIF(TD_DARWIN_64)
   LIST(APPEND SRC ./src/version.c)
   LIST(APPEND SRC ./src/hash.c)
   ADD_LIBRARY(tutil ${SRC})
-  TARGET_LINK_LIBRARIES(tutil iconv pthread os)
+  TARGET_LINK_LIBRARIES(tutil thirdparty iconv pthread os)
 ENDIF()
 
 #IF (TD_CLUSTER)
diff --git a/src/util/inc/sskiplist.h b/src/util/inc/sskiplist.h
index 2f300fa4ea..f2ae2efc54 100644
--- a/src/util/inc/sskiplist.h
+++ b/src/util/inc/sskiplist.h
@@ -28,7 +28,7 @@ extern "C" {
 #include <stdlib.h>
 
 #include "os.h"
-#include "ttypes.h"
+#include "taosdef.h"
 
 /*
  * key of each node
diff --git a/src/util/inc/tskiplist.h b/src/util/inc/tskiplist.h
index ecdbc38a05..2ebb9bf5f2 100644
--- a/src/util/inc/tskiplist.h
+++ b/src/util/inc/tskiplist.h
@@ -21,7 +21,7 @@ extern "C" {
 #endif
 
 #include "os.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tarray.h"
 
 /*
diff --git a/src/util/inc/ttypes.h b/src/util/inc/ttypes.h
deleted file mode 100644
index a099f3fa7c..0000000000
--- a/src/util/inc/ttypes.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef TDENGINE_TTYPES_H
-#define TDENGINE_TTYPES_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include "tstoken.h"
-
-// Bytes for each type.
-#define CHAR_BYTES   sizeof(char)
-#define SHORT_BYTES  sizeof(short)
-#define INT_BYTES    sizeof(int)
-#define LONG_BYTES   sizeof(int64_t)
-#define FLOAT_BYTES  sizeof(float)
-#define DOUBLE_BYTES sizeof(double)
-
-#define POINTER_BYTES sizeof(void *)  // 8 by default  assert(sizeof(ptrdiff_t) == sizseof(void*)
-
-#define TSDB_DATA_BOOL_NULL             0x02
-#define TSDB_DATA_TINYINT_NULL          0x80
-#define TSDB_DATA_SMALLINT_NULL         0x8000
-#define TSDB_DATA_INT_NULL              0x80000000
-#define TSDB_DATA_BIGINT_NULL           0x8000000000000000L
-
-#define TSDB_DATA_FLOAT_NULL            0x7FF00000              // it is an NAN
-#define TSDB_DATA_DOUBLE_NULL           0x7FFFFF0000000000L     // an NAN
-#define TSDB_DATA_NCHAR_NULL            0xFFFFFFFF
-#define TSDB_DATA_BINARY_NULL           0xFF
-
-#define TSDB_DATA_NULL_STR              "NULL"
-#define TSDB_DATA_NULL_STR_L            "null"
-
-typedef struct tDataTypeDescriptor {
-  int16_t nType;
-  int16_t nameLen;
-  int32_t nSize;
-  char *  aName;
-} tDataTypeDescriptor;
-
-extern tDataTypeDescriptor tDataTypeDesc[11];
-
-bool isValidDataType(int32_t type, int32_t length);
-bool isNull(const char *val, int32_t type);
-
-void setNull(char *val, int32_t type, int32_t bytes);
-void setNullN(char *val, int32_t type, int32_t bytes, int32_t numOfElems);
-
-void assignVal(char *val, const char *src, int32_t len, int32_t type);
-void tsDataSwap(void *pLeft, void *pRight, int32_t type, int32_t size);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  // TDENGINE_TTYPES_H
diff --git a/src/util/inc/tutil.h b/src/util/inc/tutil.h
index 04b2b32f69..cb311ed193 100644
--- a/src/util/inc/tutil.h
+++ b/src/util/inc/tutil.h
@@ -93,29 +93,6 @@ extern "C" {
     }                            \
   } while (0)
 
-#define GET_INT8_VAL(x)   (*(int8_t *)(x))
-#define GET_INT16_VAL(x)  (*(int16_t *)(x))
-#define GET_INT32_VAL(x)  (*(int32_t *)(x))
-#define GET_INT64_VAL(x)  (*(int64_t *)(x))
-
-#ifdef _TD_ARM_32_
-  #define GET_FLOAT_VAL(x)  taos_align_get_float(x)
-  #define GET_DOUBLE_VAL(x) taos_align_get_double(x)
-
-  float  taos_align_get_float(const char* pBuf);
-  double taos_align_get_double(const char* pBuf);
-
-  //#define __float_align_declear()  float __underlyFloat = 0.0;
-  //#define __float_align_declear()
-  //#define GET_FLOAT_VAL_ALIGN(x) (*(int32_t*)&(__underlyFloat) = *(int32_t*)(x); __underlyFloat);
-  // notes: src must be float or double type variable !!!
-  #define SET_FLOAT_VAL_ALIGN(dst, src) (*(int32_t*) dst = *(int32_t*)src);
-  #define SET_DOUBLE_VAL_ALIGN(dst, src) (*(int64_t*) dst = *(int64_t*)src);
-#else
-  #define GET_FLOAT_VAL(x)  (*(float *)(x))
-  #define GET_DOUBLE_VAL(x) (*(double *)(x))
-#endif
-
 #define ALIGN_NUM(n, align) (((n) + ((align)-1)) & (~((align)-1)))
 
 // align to 8bytes
diff --git a/src/util/src/tcompression.c b/src/util/src/tcompression.c
index 1592a47c15..24a53b3fe4 100644
--- a/src/util/src/tcompression.c
+++ b/src/util/src/tcompression.c
@@ -51,7 +51,6 @@
 #include "lz4.h"
 #include "tscompression.h"
 #include "taosdef.h"
-#include "ttypes.h"
 
 const int TEST_NUMBER = 1;
 #define is_bigendian() ((*(char *)&TEST_NUMBER) == 0)
diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index efe1defa57..d5e67adff6 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -22,7 +22,7 @@
 #include "tcrc32c.h"
 #include "tglobalcfg.h"
 #include "ttime.h"
-#include "ttypes.h"
+#include "taosdef.h"
 #include "tutil.h"
 #include "tlog.h"
 #include "taoserror.h"
diff --git a/src/vnode/CMakeLists.txt b/src/vnode/CMakeLists.txt
index 8549fa478c..4631c4046b 100644
--- a/src/vnode/CMakeLists.txt
+++ b/src/vnode/CMakeLists.txt
@@ -1,7 +1,7 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-ADD_SUBDIRECTORY(common)
+# ADD_SUBDIRECTORY(common)
 ADD_SUBDIRECTORY(tsdb)
 # ENABLE_TESTING()
 # ADD_SUBDIRECTORY(tests)