HappenLee commented on code in PR #17912:
URL: https://github.com/apache/doris/pull/17912#discussion_r1142998576
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be/src/vec/core/block.cpp:
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@@ -400,12 +400,25 @@ size_t Block::allocated_bytes() const {
std::string Block::dump_names() const {
std::stringstream out;
for (auto it = data.begin(); it != data.end(); ++it) {
- if (it != data.begin()) out << ", ";
Review Comment:
change stringstream to fmt::memory_buffer to improve the performance
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