diff --git a/src/system/detail/src/vnodeFile.c b/src/system/detail/src/vnodeFile.c
index f145f4a35a03768db4889c4432edca717b405fc2..1cb28e83995f75cd41e852462af8a8a55befcdfa 100644
--- a/src/system/detail/src/vnodeFile.c
+++ b/src/system/detail/src/vnodeFile.c
@@ -1254,6 +1254,7 @@ int vnodeWriteBlockToFile(SMeterObj *pObj, SCompBlock *pCompBlock, SData *data[]
       offset += (cdata[i]->len + sizeof(TSCKSUM));
 
     } else {
+      data[i]->len = pObj->schema[i].bytes * points;
       fields[i].len = data[i]->len;
       taosCalcChecksumAppend(0, (uint8_t *)(data[i]->data), data[i]->len + sizeof(TSCKSUM));
       offset += (data[i]->len + sizeof(TSCKSUM));