englefly commented on code in PR #64102:
URL: https://github.com/apache/doris/pull/64102#discussion_r3356164340
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/processor/post/RuntimeFilterPushDownVisitor.java:
##########
@@ -325,15 +328,53 @@ public Boolean
visitPhysicalNestedLoopJoin(PhysicalNestedLoopJoin<? extends Plan
boolean pushed = false;
Plan left = join.left();
Plan right = join.right();
- if (left.getOutputSet().containsAll(ctx.probeExpr.getInputSlots())) {
+ if (left.getOutputSet().containsAll(ctx.probeExpr.getInputSlots())
+ && canPushThroughJoinChild(join, true, ctx)) {
pushed |= left.accept(this, ctx);
}
- if (right.getOutputSet().containsAll(ctx.probeExpr.getInputSlots())) {
+ if (right.getOutputSet().containsAll(ctx.probeExpr.getInputSlots())
+ && canPushThroughJoinChild(join, false, ctx)) {
pushed |= right.accept(this, ctx);
}
return pushed;
}
+ private boolean canPushThroughJoinChild(AbstractPhysicalJoin<? extends
Plan, ? extends Plan> join,
+ boolean isLeftChild, PushDownContext ctx) {
+ if (join.equals(ctx.builderNode) ||
!isNullGeneratingChild(join.getJoinType(), isLeftChild)) {
+ return true;
+ }
+ return isNullPropagating(ctx.probeExpr);
Review Comment:
为什么需要 isNullPropagating? 有例子吗
##########
regression-test/suites/correctness_p0/test_runtime_filter_outer_join_nullable_side.groovy:
##########
@@ -0,0 +1,94 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+suite("test_runtime_filter_outer_join_nullable_side") {
+ sql "drop table if exists rf_outer_join_nullable_a"
+ sql "drop table if exists rf_outer_join_nullable_b"
+ sql "drop table if exists rf_outer_join_nullable_c"
+
+ sql """
+ create table rf_outer_join_nullable_a (
+ pk int
+ )
+ duplicate key(pk)
+ distributed by hash(pk) buckets 1
+ properties("replication_num" = "1")
+ """
+
+ sql """
+ create table rf_outer_join_nullable_b (
+ pk int
+ )
+ duplicate key(pk)
+ distributed by hash(pk) buckets 1
+ properties("replication_num" = "1")
+ """
+
+ sql """
+ create table rf_outer_join_nullable_c (
+ pk int
+ )
+ duplicate key(pk)
+ distributed by hash(pk) buckets 1
+ properties("replication_num" = "1")
+ """
+
+ sql "insert into rf_outer_join_nullable_a values (1)"
+ sql "insert into rf_outer_join_nullable_b values (1)"
+ sql "insert into rf_outer_join_nullable_c values (0)"
+ sql "sync"
+
+ sql "set enable_nereids_planner=true"
+ sql "set enable_fallback_to_original_planner=false"
+ sql "set disable_join_reorder=true"
+ sql "set runtime_filter_mode='GLOBAL'"
+ sql "set runtime_filter_type='IN_OR_BLOOM_FILTER'"
+ sql "set runtime_filter_wait_infinitely=true"
+ sql "set enable_runtime_filter_prune=false"
+ sql "set parallel_pipeline_task_num=1"
+
+ def query = """
+ select coalesce(b.pk, 0) as k, count(*) as cnt
+ from rf_outer_join_nullable_a a
+ left join rf_outer_join_nullable_b b on a.pk = b.pk
+ inner join rf_outer_join_nullable_c c on coalesce(b.pk, 0) = c.pk
+ group by 1
+ order by 1
+ """
+
+ test {
Review Comment:
assertTrue(plan.contains("hashJoin[INNER_JOIN"), plan) 这是想判断没有生成 rf 吗?
这样只能判断确实有一个 inner join,但不能判断 rf.
可以这样:
qt_shape """
explain shape plan
select coalesce(b.pk, 0) as k, count(*) as cnt
from rf_outer_join_nullable_a a
left join rf_outer_join_nullable_b b on a.pk = b.pk
inner join rf_outer_join_nullable_c c on coalesce(b.pk, 0) = c.pk
group by 1
order by 1
"""
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