[#1029 TBASE-1431]

src/system/detail/src/vnodeQueryImpl.c

@@ -3379,6 +3379,8 @@ void forwardQueryStartPosition(SQueryRuntimeEnv *pRuntimeEnv) {
     updateOffsetVal(pRuntimeEnv, &blockInfo, pBlock);
   } else {
     pQuery->limit.offset -= maxReads;
+    // update the lastkey, since the following skip operation may traverse to another media. update the lastkey first.
+    pQuery->lastKey = (QUERY_IS_ASC_QUERY(pQuery))? blockInfo.keyLast+1:blockInfo.keyFirst-1;    
     doSkipDataBlock(pRuntimeEnv);
   }
 }