mapleFU commented on code in PR #37400:
URL: https://github.com/apache/arrow/pull/37400#discussion_r1352345552


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cpp/src/parquet/file_writer.cc:
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@@ -140,38 +143,44 @@ class RowGroupSerializer : public 
RowGroupWriter::Contents {
 
     const int32_t column_ordinal = next_column_index_++;
     const auto& path = col_meta->descr()->path();
+    const ColumnProperties& column_properties = 
properties_->column_properties(path);

Review Comment:
   This is used to reduce the count for calling for 
`properties_->column_properties(path)`



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