morrySnow commented on a change in pull request #8695:
URL: https://github.com/apache/incubator-doris/pull/8695#discussion_r839158789
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File path:
fe/fe-core/src/main/java/org/apache/doris/planner/JoinCostEvaluation.java
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@@ -147,7 +149,7 @@ public long constructHashTableSpace() {
Math.pow(1.5, (int) ((Math.log((double)
rhsTreeCardinality/4096) / Math.log(1.5)) + 1)) * 4096;
double nodeOverheadSpace = nodeArrayLen * 16;
double nodeTuplePointerSpace = nodeArrayLen * rhsTreeTupleIdNum * 8;
- return Math.round((bucketPointerSpace + (double) rhsTreeCardinality *
rhsTreeAvgRowSize
+ return Math.round((bucketPointerSpace + (double) rhsTreeCardinality *
rhsTreeAvgRowSize * COMPRESSION_RATIO
Review comment:
>
i'm glad to discuss it, and if you already have some plans in this domain, i
could do sometimes else
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