HappenLee commented on code in PR #47364:
URL: https://github.com/apache/doris/pull/47364#discussion_r1929651486
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be/src/vec/columns/column.h:
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@@ -512,6 +512,9 @@ class IColumn : public COW<IColumn> {
/// Size of column data in memory (may be approximate) - for profiling.
Zero, if could not be determined.
virtual size_t byte_size() const = 0;
+ /// Capacity of unsed memory could hold the all data from src column.
Review Comment:
need more detail comment for the api
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