morningman commented on a change in pull request #3188: fix join hints not work
when need table reorder
URL: https://github.com/apache/incubator-doris/pull/3188#discussion_r400255969
##########
File path: fe/src/main/java/org/apache/doris/planner/CrossJoinNode.java
##########
@@ -59,16 +59,16 @@ public TableRef getInnerRef() {
@Override
public void computeStats(Analyzer analyzer) {
- // super.computeStats(analyzer);
- // if (getChild(0).cardinality_ == -1 || getChild(1).cardinality_ ==
-1) {
- // cardinality_ = -1;
- // } else {
- // cardinality_ = getChild(0).cardinality_ *
getChild(1).cardinality_;
- // if (computeSelectivity() != -1) {
- // cardinality_ = Math.round(((double) cardinality_) *
computeSelectivity());
- // }
- // }
- // LOG.debug("stats CrossJoin: cardinality=" +
Long.toString(cardinality_));
+ super.computeStats(analyzer);
+ if (getChild(0).cardinality == -1 || getChild(1).cardinality == -1) {
+ cardinality = -1;
+ } else {
+ cardinality = getChild(0).cardinality * getChild(1).cardinality;
+ if (computeSelectivity() != -1) {
+ cardinality = Math.round(((double) cardinality) *
computeSelectivity());
+ }
+ }
+ LOG.debug("stats CrossJoin: cardinality=" +
Long.toString(cardinality));
Review comment:
```suggestion
LOG.debug("stats CrossJoin: cardinality= {}",
Long.toString(cardinality));
```
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