xinyiZzz commented on code in PR #8745:
URL: https://github.com/apache/incubator-doris/pull/8745#discussion_r845709112
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fe/fe-core/src/main/java/org/apache/doris/planner/RuntimeFilterGenerator.java:
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@@ -122,6 +124,33 @@ private RuntimeFilterGenerator(Analyzer analyzer) {
bloomFilterSizeLimits = new FilterSizeLimits(sessionVariable);
}
+ private void collectAllTupleIdsHavingConjunct(PlanNode node,
HashSet<TupleId> tupleIds) {
+ // for simplicity, skip join node( which contains more than 1 tuple id
)
+ // we only look for the node meets either of the 2 conditions:
+ // 1. The node itself has conjunct
+ // 2. it's an aggregation or exchange node with no conjunct, but its
descendant have conjuncts.
+ int tupleNumBeforeCheckingChildren = tupleIds.size();
+ for (PlanNode child : node.getChildren()) {
+ collectAllTupleIdsHavingConjunct(child, tupleIds);
+ }
+ if ((node.getTupleIds().size() == 1 && !node.conjuncts.isEmpty())) {
+ // The node itself has conjunct
+ tupleIds.add(node.getTupleIds().get(0));
+ } else if ((node instanceof AggregationNode || node instanceof
ExchangeNode) && tupleIds.size() > tupleNumBeforeCheckingChildren) {
Review Comment:
If don't need to limit the node type, this strategy can be placed after the
entire runtime filter is generated, and you only need to traverse
`runtimeFiltersByTid`.
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