Skip to content

Skip per-row filter evaluation when all row groups are fully matched #21372

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
Dandandan wants to merge 1 commit into from
Closed

Skip per-row filter evaluation when all row groups are fully matched #21372

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions datafusion/datasource-parquet/src/opener.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1048,6 +1048,15 @@ impl RowGroupsPrunedParquetOpen {
row_groups.prune_by_limit(limit, rg_metadata, &prepared.file_metrics);
}

// If all remaining row groups are fully matched by the predicate
// (i.e., statistics prove every row satisfies the filter), skip
// per-row filter evaluation entirely.
let all_fully_matched = row_filter.is_some()
&& row_groups
.row_group_indexes()
.all(|idx| row_groups.is_fully_matched()[idx]);
let row_filter = if all_fully_matched { None } else { row_filter };

// Page index pruning: if all data on individual pages can
// be ruled using page metadata, rows from other columns
// with that range can be skipped as well.
Expand Down
Loading