diff --git a/src/common/src/tdataformat.c b/src/common/src/tdataformat.c
index 9293139f52c0376052a76433e52640e4135413ec..72a08f1a680c53f9c961d17843c89adf207c4ec8 100644
--- a/src/common/src/tdataformat.c
+++ b/src/common/src/tdataformat.c
@@ -375,8 +375,6 @@ int tdInitDataCols(SDataCols *pCols, STSchema *pSchema) {
 
   for (i = 0; i < schemaNCols(pSchema); i++) {
     dataColInit(pCols->cols + i, schemaColAt(pSchema, i), pCols->maxPoints);
-    pCols->cols[i].spaceSize = 0;
-    tdAllocMemForCol(pCols->cols + i, pCols->maxPoints);
   }
   
   return 0;