rdblue commented on code in PR #6622:
URL: https://github.com/apache/iceberg/pull/6622#discussion_r1103893796
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spark/v3.3/spark/src/main/java/org/apache/iceberg/spark/source/SparkScanBuilder.java:
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@@ -158,6 +179,129 @@ public Filter[] pushedFilters() {
return pushedFilters;
}
+ @Override
+ public boolean pushAggregation(Aggregation aggregation) {
+ if (!canPushDownAggregation(aggregation)) {
+ return false;
+ }
+
+ AggregateEvaluator aggregateEvaluator;
+ try {
+ List<Expression> aggregates =
+ Arrays.stream(aggregation.aggregateExpressions())
+ .map(agg -> SparkAggregates.convert(agg))
+ .collect(Collectors.toList());
+ aggregateEvaluator = AggregateEvaluator.create(schema, aggregates);
+ } catch (UnsupportedOperationException | IllegalArgumentException e) {
+ LOG.info("Skipped aggregate pushdown: " + e);
+ return false;
+ }
+
+ if
(!metricsModeSupportsAggregatePushDown(aggregateEvaluator.aggregates())) {
+ return false;
+ }
+
+ TableScanContext context = new TableScanContext().reportWith(((BaseTable)
table).getReporter());
Review Comment:
Why is this creating a `TableScanContext`? You should be able to use
`table.newScan()` and do this entirely with the public interfaces.
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