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Optimize by collapsing trees into single SQL queries

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This commit is contained in:
Barak Michener 2015-07-22 19:11:59 -04:00
parent 185e236f15
commit 621acae945
7 changed files with 501 additions and 50 deletions
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3
graph/iterator/and_iterator_optimize.go
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@ -103,6 +103,7 @@ func (it *And) Optimize() (graph.Iterator, bool) {
newReplacement, hasOne := it.qs.OptimizeIterator(newAnd)
if hasOne {
newAnd.Close()
glog.V(3).Infoln(it.UID(), "became", newReplacement.UID(), "from quadstore")
return newReplacement, true
}
}
@ -330,7 +331,7 @@ func materializeIts(its []graph.Iterator) []graph.Iterator {
out = append(out, its[0])
for _, it := range its[1:] {
stats := it.Stats()
if stats.Size*stats.NextCost < (stats.ContainsCost * (1 + (stats.Size / (allStats.Size + 1)))) {
if false && stats.Size*stats.NextCost < (stats.ContainsCost*(1+(stats.Size/(allStats.Size+1)))) {
if graph.Height(it, graph.Materialize) > 10 {
out = append(out, NewMaterialize(it))
continue