xzj7019 commented on code in PR #46773:
URL: https://github.com/apache/doris/pull/46773#discussion_r1912636496
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fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/executor/Rewriter.java:
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@@ -395,11 +392,8 @@ public class Rewriter extends AbstractBatchJobExecutor {
topDown(new SplitLimit()),
topDown(
new PushDownLimit(),
Review Comment:
1) don't remove topn push down rule from rbo stage
2) enhance the topn push down with the limit threshold protection
3) try to find why topn not pushing down to the inner join node
4) put this rule to cbo stage to extend the pushing down scenario is fine
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