vldpyatkov commented on code in PR #13563:
URL: https://github.com/apache/ignite/pull/13563#discussion_r3970958723
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modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/rel/RecursiveCteState.java:
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@@ -19,18 +19,32 @@
import java.util.ArrayList;
import java.util.Collections;
+import java.util.HashSet;
import java.util.List;
+import java.util.Set;
import
org.apache.ignite.internal.processors.query.calcite.exec.ExecutionContext;
+import org.apache.ignite.internal.processors.query.calcite.exec.RowHandler;
+import
org.apache.ignite.internal.processors.query.calcite.exec.exp.agg.GroupKey;
import
org.apache.ignite.internal.processors.query.calcite.exec.tracker.RowTracker;
import org.apache.ignite.internal.util.GridUnsafe;
+import org.jetbrains.annotations.Nullable;
/** Query-local current and next deltas of a recursive CTE. */
public class RecursiveCteState<Row> {
+ /** Rows seen across all iterations, or null for UNION ALL. */
+ @Nullable private final Set<GroupKey<Row>> seen;
+
+ /** Row handler used for SQL grouping keys. */
+ private final RowHandler<Row> hnd;
+
+ /** Memory tracker for keys and their rows retained for duplicate
elimination. */
+ @Nullable private final RowTracker<GroupKey<Row>> seenMemoryTracker;
Review Comment:
The same as above.
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