mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-18 22:52:11 +01:00
bf3d9ba57b
When ingesting samples with the same labels(duplicated samples or
samples with the same labels after `by` or `without` options). They
could register different entries for the same labelset in
LabelsCompressor.
For example, both index 99 and 100 can be assigned to label `foo=1` in
two concurrent pushes. Then due to differing label indexes in encoded
keys, the samples will appear as distinct in aggrState, resulting in
duplicated results after decompressing the label indexes.
fbde238cdc/lib/streamaggr/streamaggr.go (L933)
In this pull request, since we need to store `idxToLabel` first to
ensure the idx can be searched after `lc.labelToIdxStore`,
the `lc.idxToLabel` still could contain a duplicated entries
[100]="foo=1". But given the low likelihood of this issue and the size
of idxToLabel, it should be fine.
126 lines
2.7 KiB
Go
126 lines
2.7 KiB
Go
package promutils
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
"testing"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
|
|
)
|
|
|
|
func TestLabelsCompressorSerial(t *testing.T) {
|
|
var lc LabelsCompressor
|
|
|
|
f := func(labels []prompbmarshal.Label) {
|
|
t.Helper()
|
|
|
|
sExpected := labelsToString(labels)
|
|
|
|
data := lc.Compress(nil, labels)
|
|
labelsResult := lc.Decompress(nil, data)
|
|
|
|
sResult := labelsToString(labelsResult)
|
|
if sExpected != sResult {
|
|
t.Fatalf("unexpected result; got %s; want %s", sResult, sExpected)
|
|
}
|
|
|
|
if len(labels) > 0 {
|
|
if n := lc.SizeBytes(); n == 0 {
|
|
t.Fatalf("Unexpected zero SizeBytes()")
|
|
}
|
|
if n := lc.ItemsCount(); n == 0 {
|
|
t.Fatalf("Unexpected zero ItemsCount()")
|
|
}
|
|
}
|
|
}
|
|
|
|
// empty labels
|
|
f(nil)
|
|
f([]prompbmarshal.Label{})
|
|
|
|
// non-empty labels
|
|
f([]prompbmarshal.Label{
|
|
{
|
|
Name: "instance",
|
|
Value: "12345.4342.342.3",
|
|
},
|
|
{
|
|
Name: "job",
|
|
Value: "kube-pod-12323",
|
|
},
|
|
})
|
|
f([]prompbmarshal.Label{
|
|
{
|
|
Name: "instance",
|
|
Value: "12345.4342.342.3",
|
|
},
|
|
{
|
|
Name: "job",
|
|
Value: "kube-pod-12323",
|
|
},
|
|
{
|
|
Name: "pod",
|
|
Value: "foo-bar-baz",
|
|
},
|
|
})
|
|
}
|
|
|
|
func TestLabelsCompressorConcurrent(t *testing.T) {
|
|
const concurrency = 5
|
|
var lc LabelsCompressor
|
|
var expectCompressedKeys sync.Map
|
|
|
|
var wg sync.WaitGroup
|
|
for i := 0; i < concurrency; i++ {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
series := newTestSeries(100, 20)
|
|
for n, labels := range series {
|
|
sExpected := labelsToString(labels)
|
|
data := lc.Compress(nil, labels)
|
|
if expectData, ok := expectCompressedKeys.LoadOrStore(n, data); ok {
|
|
if string(data) != string(expectData.([]byte)) {
|
|
panic(fmt.Errorf("unexpected compress result at series/%d in iteration %d ", n, i))
|
|
}
|
|
}
|
|
labelsResult := lc.Decompress(nil, data)
|
|
sResult := labelsToString(labelsResult)
|
|
if sExpected != sResult {
|
|
panic(fmt.Errorf("unexpected result on iteration %d; got %s; want %s", i, sResult, sExpected))
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
|
|
if n := lc.SizeBytes(); n == 0 {
|
|
t.Fatalf("Unexpected zero SizeBytes()")
|
|
}
|
|
if n := lc.ItemsCount(); n == 0 {
|
|
t.Fatalf("Unexpected zero ItemsCount()")
|
|
}
|
|
}
|
|
|
|
func labelsToString(labels []prompbmarshal.Label) string {
|
|
l := Labels{
|
|
Labels: labels,
|
|
}
|
|
return l.String()
|
|
}
|
|
|
|
func newTestSeries(seriesCount, labelsPerSeries int) [][]prompbmarshal.Label {
|
|
series := make([][]prompbmarshal.Label, seriesCount)
|
|
for i := 0; i < seriesCount; i++ {
|
|
labels := make([]prompbmarshal.Label, labelsPerSeries)
|
|
for j := 0; j < labelsPerSeries; j++ {
|
|
labels[j] = prompbmarshal.Label{
|
|
Name: fmt.Sprintf("label_%d", j),
|
|
Value: fmt.Sprintf("value_%d_%d", i, j),
|
|
}
|
|
}
|
|
series[i] = labels
|
|
}
|
|
return series
|
|
}
|