Github user jianqiao commented on a diff in the pull request:
https://github.com/apache/incubator-quickstep/pull/180#discussion_r99859847
--- Diff: query_optimizer/rules/AttachLIPFilters.cpp ---
@@ -128,7 +129,7 @@ void AttachLIPFilters::attachLIPFilters(
lip_filter_configuration_->addBuildInfo(
P::SingleIdentityHashFilterBuildInfo::Create(
pair.second->source_attribute,
- pair.second->estimated_cardinality * 8),
+ std::max(64uL, pair.second->estimated_cardinality * 8u)),
--- End diff --
It seems that we won't need to change this value. If there are scenarios
later that the configuration of this value makes a difference, then we can add
a flag for that.
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