Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

tools: Fix partial and empty matchers in rewrite #3891

Merged
merged 2 commits into from
Mar 9, 2021
Merged

tools: Fix partial and empty matchers in rewrite #3891

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
4269b8f
Fix partial and empty matchers match
yeya24 Mar 6, 2021
33073b3
add testcase for non-equal matchers
yeya24 Mar 6, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
91 changes: 91 additions & 0 deletions pkg/compactv2/compactor_test.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -306,6 +306,97 @@ func TestCompactor_WriteSeries_e2e(t *testing.T) {
NumChunks: 2,
},
},
{
name: "1 blocks + delete modifier. For deletion request, full match is required. Delete the first two series",
input: [][]seriesSamples{
{
{lset: labels.Labels{{Name: "a", Value: "1"}, {Name: "b", Value: "2"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "1"}, {Name: "b", Value: "2"}, {Name: "foo", Value: "bar"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}, {10, 12}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "b", Value: "2"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}, {10, 12}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "c", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}, {10, 12}, {11, 11}, {20, 20}}}},
},
},
modifiers: []Modifier{WithDeletionModifier(
metadata.DeletionRequest{
Matchers: []*labels.Matcher{
labels.MustNewMatcher(labels.MatchEqual, "a", "1"),
labels.MustNewMatcher(labels.MatchEqual, "b", "2"),
},
})},
expected: []seriesSamples{
{lset: labels.Labels{{Name: "a", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}, {10, 12}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "b", Value: "2"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}, {10, 12}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "c", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}, {10, 12}, {11, 11}, {20, 20}}}},
},
expectedChanges: "Deleted {a=\"1\", b=\"2\"} [{0 20}]\nDeleted {a=\"1\", b=\"2\", foo=\"bar\"} [{0 20}]\n",
expectedStats: tsdb.BlockStats{
NumSamples: 18,
NumSeries: 3,
NumChunks: 3,
},
},
{
name: "1 blocks + delete modifier. Deletion request contains non-equal matchers.",
input: [][]seriesSamples{
{
{lset: labels.Labels{{Name: "a", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "2"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "2"}, {Name: "foo", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "2"}, {Name: "foo", Value: "bar"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "3"}, {Name: "foo", Value: "baz"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "foo", Value: "bat"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},

// Label a is present but with an empty value.
{lset: labels.Labels{{Name: "a", Value: ""}, {Name: "foo", Value: "bat"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
// Series with unrelated labels.
{lset: labels.Labels{{Name: "c", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
},
},
modifiers: []Modifier{WithDeletionModifier(
metadata.DeletionRequest{
Matchers: []*labels.Matcher{
labels.MustNewMatcher(labels.MatchNotEqual, "a", "1"),
labels.MustNewMatcher(labels.MatchRegexp, "foo", "^ba.$"),
},
})},
expected: []seriesSamples{
{lset: labels.Labels{{Name: "a", Value: ""}, {Name: "foo", Value: "bat"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "2"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "a", Value: "2"}, {Name: "foo", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "c", Value: "1"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
{lset: labels.Labels{{Name: "foo", Value: "bat"}},
chunks: [][]sample{{{0, 0}, {1, 1}, {2, 2}}, {{10, 11}, {11, 11}, {20, 20}}}},
},
expectedChanges: "Deleted {a=\"2\", foo=\"bar\"} [{0 20}]\nDeleted {a=\"3\", foo=\"baz\"} [{0 20}]\n",
expectedStats: tsdb.BlockStats{
NumSamples: 36,
NumSeries: 6,
NumChunks: 12,
},
},
} {
t.Run(tcase.name, func(t *testing.T) {
tmpDir, err := ioutil.TempDir("", "test-series-writer")
Expand Down
5 changes: 1 addition & 4 deletions pkg/compactv2/modifiers.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -62,12 +62,9 @@ SeriesLoop:
for _, deletions := range d.d.deletions {
for _, m := range deletions.Matchers {
v := lbls.Get(m.Name)
if v == "" {
continue
}

// Only if all matchers in the deletion request are matched can we proceed to deletion.
if !m.Matches(v) {
if v == "" || !m.Matches(v) {
Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

lbls.Get(m.Name) returns an empty string if the label is not present in the label set. What if the label name is present but with an empty string as its value, is this a valid case in Prometheus?

If yes, we need to use lbls.Has(m.Name) here.

Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

ack, this is a good point, @yeya24

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Just checked Prometheus and it is not allowed. So checking v == "" is fine.

Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

that's right, having empty value is the same as not having the label at all in Prometheus

continue DeletionsLoop
}
}
Expand Down