adonis0147 commented on a change in pull request #8494:
URL: https://github.com/apache/incubator-doris/pull/8494#discussion_r827809936



##########
File path: be/src/olap/row_block2.cpp
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@@ -349,11 +354,13 @@ Status RowBlockV2::_copy_data_to_column(int cid, 
doris::vectorized::MutableColum
     return Status::OK();
 }
 
-Status RowBlockV2::_append_data_to_column(const ColumnVectorBatch* batch, 
uint16_t off, uint16_t len, doris::vectorized::MutableColumnPtr& origin_column) 
{
+Status RowBlockV2::_append_data_to_column(const ColumnVectorBatch* batch, 
size_t start,

Review comment:
       Because the type of the member `length` in struct `CollectionValue` is 
`uint32_t`. Use `uint16_t` may cause potential bugs.




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