ZhangHuiGui commented on code in PR #41194:
URL: https://github.com/apache/arrow/pull/41194#discussion_r1567080524
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cpp/src/arrow/compute/row/encode_internal.h:
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@@ -111,7 +111,7 @@ class ARROW_EXPORT RowTableEncoder {
const std::vector<KeyColumnArray>& cols_in);
// Data initialized once, based on data types of key columns
- RowTableMetadata row_metadata_;
+ std::shared_ptr<RowTableMetadata> row_metadata_;
Review Comment:
Ah, I understand.
We should uniformly manage the life cycle of `RowTableMetadata` in
`RowArray` and `GrouperFastImpl`, and others like `RowTableImpl` and
`RowTableEncoder` only need to hold a raw-pointer of `RowTableMetadata`.
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