morningman commented on a change in pull request #7884:
URL: https://github.com/apache/incubator-doris/pull/7884#discussion_r791375122
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File path: be/src/vec/columns/column_string.cpp
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@@ -292,6 +292,7 @@ ColumnPtr ColumnString::replicate(const Offsets&
replicate_offsets) const {
void ColumnString::reserve(size_t n) {
offsets.reserve(n);
+ chars.reserve(n * 5);
Review comment:
why multi 5? add comment to explain, or define it as a variable.
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