adriangb commented on code in PR #16014:
URL: https://github.com/apache/datafusion/pull/16014#discussion_r2094127261
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datafusion/datasource-parquet/src/opener.rs:
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@@ -111,19 +120,61 @@ impl FileOpener for ParquetOpener {
.create(projected_schema, Arc::clone(&self.table_schema));
let predicate = self.predicate.clone();
let table_schema = Arc::clone(&self.table_schema);
+ let partition_fields = self.partition_fields.clone();
let reorder_predicates = self.reorder_filters;
let pushdown_filters = self.pushdown_filters;
let coerce_int96 = self.coerce_int96;
let enable_bloom_filter = self.enable_bloom_filter;
let enable_row_group_stats_pruning =
self.enable_row_group_stats_pruning;
let limit = self.limit;
- let predicate_creation_errors = MetricBuilder::new(&self.metrics)
- .global_counter("num_predicate_creation_errors");
-
let enable_page_index = self.enable_page_index;
Ok(Box::pin(async move {
+ // Prune this file using the file level statistics.
Review Comment:
> which can be set to true if there are dynamic predicates present
the issue is: how do we know the filters are dynamic? we've hidden dynamic
filters behind `PhysicalExpr` so that the system can treat them as normal
filters. we could do _any_ filter pushdown but that doesn't seem like much of
an improvement.
I also think this pruning should be quite cheap / the record batches being
filtered are just a couple rows
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