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Opmize MatchNotEqual (#12377)

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Signed-off-by: Alan Protasio <alanprot@gmail.com>
This commit is contained in:
Alan Protasio 2023-05-21 01:41:30 -07:00 committed by GitHub
parent 92d6980360
commit 8c5d4b4add
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2 changed files with 17 additions and 8 deletions
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24
tsdb/querier.go
View file

@ -361,6 +361,22 @@ func postingsForMatcher(ix IndexReader, m *labels.Matcher) (index.Postings, erro
// inversePostingsForMatcher returns the postings for the series with the label name set but not matching the matcher.
func inversePostingsForMatcher(ix IndexReader, m *labels.Matcher) (index.Postings, error) {
// Fast-path for MatchNotRegexp matching.
// Inverse of a MatchNotRegexp is MatchRegexp (double negation).
// Fast-path for set matching.
if m.Type == labels.MatchNotRegexp {
setMatches := findSetMatches(m.GetRegexString())
if len(setMatches) > 0 {
return ix.Postings(m.Name, setMatches...)
}
}
// Fast-path for MatchNotEqual matching.
// Inverse of a MatchNotEqual is MatchEqual (double negation).
if m.Type == labels.MatchNotEqual {
return ix.Postings(m.Name, m.Value)
}
vals, err := ix.LabelValues(m.Name)
if err != nil {
return nil, err
@ -371,14 +387,6 @@ func inversePostingsForMatcher(ix IndexReader, m *labels.Matcher) (index.Posting
if m.Type == labels.MatchEqual && m.Value == "" {
res = vals
} else {
// Inverse of a MatchNotRegexp is MatchRegexp (double negation).
// Fast-path for set matching.
if m.Type == labels.MatchNotRegexp {
setMatches := findSetMatches(m.GetRegexString())
if len(setMatches) > 0 {
return ix.Postings(m.Name, setMatches...)
}
}
for _, val := range vals {
if !m.Matches(val) {
res = append(res, val)

1
tsdb/querier_bench_test.go
View file

@ -125,6 +125,7 @@ func benchmarkPostingsForMatchers(b *testing.B, ir IndexReader) {
{`n="X",j="foo"`, []*labels.Matcher{nX, jFoo}},
{`j="foo",n="1"`, []*labels.Matcher{jFoo, n1}},
{`n="1",j!="foo"`, []*labels.Matcher{n1, jNotFoo}},
{`n="1",i!="2"`, []*labels.Matcher{n1, iNot2}},
{`n="X",j!="foo"`, []*labels.Matcher{nX, jNotFoo}},
{`i=~"1[0-9]",j=~"foo|bar"`, []*labels.Matcher{iCharSet, jFooBar}},
{`j=~"foo|bar"`, []*labels.Matcher{jFooBar}},