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global: snapshot

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nym21
2026-03-07 17:05:45 +01:00
parent d4faedfba1
commit cbad78962f
18 changed files with 349 additions and 82 deletions
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9
crates/brk_query/src/impl/metrics.rs
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@@ -63,6 +63,15 @@ impl Query {
num_cols * CSV_HEADER_BYTES_PER_COL + num_rows * num_cols * CSV_CELL_BYTES;
let mut csv = String::with_capacity(estimated_size);
// Single-column fast path: stream directly, no Vec<T> materialization
if num_cols == 1 {
let col = columns[0];
csv.push_str(col.name());
csv.push('\n');
col.write_csv_column(Some(start), Some(end), &mut csv)?;
return Ok(csv);
}
for (i, col) in columns.iter().enumerate() {
if i > 0 {
csv.push(',');