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blocks_store_queryable_test.go
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package querier
import (
"context"
"fmt"
"io"
"sort"
"strings"
"testing"
"time"
"github.com/go-kit/kit/log"
"github.com/gogo/protobuf/types"
"github.com/oklog/ulid"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/testutil"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/promql"
"github.com/prometheus/prometheus/storage"
"github.com/prometheus/prometheus/tsdb/chunkenc"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
"github.com/thanos-io/thanos/pkg/store/hintspb"
"github.com/thanos-io/thanos/pkg/store/labelpb"
"github.com/thanos-io/thanos/pkg/store/storepb"
"github.com/weaveworks/common/user"
"google.golang.org/grpc"
"github.com/cortexproject/cortex/pkg/storage/tsdb/bucketindex"
"github.com/cortexproject/cortex/pkg/storegateway/storegatewaypb"
"github.com/cortexproject/cortex/pkg/util"
"github.com/cortexproject/cortex/pkg/util/services"
"github.com/cortexproject/cortex/pkg/util/validation"
)
func TestBlocksStoreQuerier_Select(t *testing.T) {
const (
metricName = "test_metric"
minT = int64(10)
maxT = int64(20)
)
var (
block1 = ulid.MustNew(1, nil)
block2 = ulid.MustNew(2, nil)
block3 = ulid.MustNew(3, nil)
block4 = ulid.MustNew(4, nil)
metricNameLabel = labels.Label{Name: labels.MetricName, Value: metricName}
series1Label = labels.Label{Name: "series", Value: "1"}
series2Label = labels.Label{Name: "series", Value: "2"}
)
type valueResult struct {
t int64
v float64
}
type seriesResult struct {
lbls labels.Labels
values []valueResult
}
tests := map[string]struct {
finderResult bucketindex.Blocks
finderErr error
storeSetResponses []interface{}
limits BlocksStoreLimits
expectedSeries []seriesResult
expectedErr error
expectedMetrics string
}{
"no block in the storage matching the query time range": {
finderResult: nil,
limits: &blocksStoreLimitsMock{},
expectedErr: nil,
},
"error while finding blocks matching the query time range": {
finderErr: errors.New("unable to find blocks"),
limits: &blocksStoreLimitsMock{},
expectedErr: errors.New("unable to find blocks"),
},
"error while getting clients to query the store-gateway": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
errors.New("no client found"),
},
limits: &blocksStoreLimitsMock{},
expectedErr: errors.New("no client found"),
},
"a single store-gateway instance holds the required blocks (single returned series)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel}, minT+1, 2),
mockHintsResponse(block1, block2),
}}: {block1, block2},
},
},
limits: &blocksStoreLimitsMock{},
expectedSeries: []seriesResult{
{
lbls: labels.New(metricNameLabel),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 2},
},
},
},
},
"a single store-gateway instance holds the required blocks (multiple returned series)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT, 3),
mockHintsResponse(block1, block2),
}}: {block1, block2},
},
},
limits: &blocksStoreLimitsMock{},
expectedSeries: []seriesResult{
{
lbls: labels.New(metricNameLabel, series1Label),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 2},
},
}, {
lbls: labels.New(metricNameLabel, series2Label),
values: []valueResult{
{t: minT, v: 3},
},
},
},
},
"multiple store-gateway instances holds the required blocks without overlapping series (single returned series)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel}, minT, 1),
mockHintsResponse(block1),
}}: {block1},
&storeGatewayClientMock{remoteAddr: "2.2.2.2", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel}, minT+1, 2),
mockHintsResponse(block2),
}}: {block2},
},
},
limits: &blocksStoreLimitsMock{},
expectedSeries: []seriesResult{
{
lbls: labels.New(metricNameLabel),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 2},
},
},
},
},
"multiple store-gateway instances holds the required blocks with overlapping series (single returned series)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel}, minT+1, 2),
mockHintsResponse(block1),
}}: {block1},
&storeGatewayClientMock{remoteAddr: "2.2.2.2", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel}, minT+1, 2),
mockHintsResponse(block2),
}}: {block2},
},
},
limits: &blocksStoreLimitsMock{},
expectedSeries: []seriesResult{
{
lbls: labels.New(metricNameLabel),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 2},
},
},
},
},
"multiple store-gateway instances holds the required blocks with overlapping series (multiple returned series)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT, 1),
mockHintsResponse(block1),
}}: {block1},
&storeGatewayClientMock{remoteAddr: "2.2.2.2", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockHintsResponse(block2),
}}: {block2},
&storeGatewayClientMock{remoteAddr: "3.3.3.3", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT+1, 3),
mockHintsResponse(block3),
}}: {block3},
},
},
limits: &blocksStoreLimitsMock{},
expectedSeries: []seriesResult{
{
lbls: labels.New(metricNameLabel, series1Label),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 2},
},
}, {
lbls: labels.New(metricNameLabel, series2Label),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 3},
},
},
},
expectedMetrics: `
# HELP cortex_querier_storegateway_instances_hit_per_query Number of store-gateway instances hit for a single query.
# TYPE cortex_querier_storegateway_instances_hit_per_query histogram
cortex_querier_storegateway_instances_hit_per_query_bucket{le="0"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="1"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="2"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="3"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="4"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="5"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="6"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="7"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="8"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="9"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="10"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_instances_hit_per_query_sum 3
cortex_querier_storegateway_instances_hit_per_query_count 1
# HELP cortex_querier_storegateway_refetches_per_query Number of re-fetches attempted while querying store-gateway instances due to missing blocks.
# TYPE cortex_querier_storegateway_refetches_per_query histogram
cortex_querier_storegateway_refetches_per_query_bucket{le="0"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="1"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="2"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_refetches_per_query_sum 0
cortex_querier_storegateway_refetches_per_query_count 1
`,
},
"a single store-gateway instance has some missing blocks (consistency check failed)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
// First attempt returns a client whose response does not include all expected blocks.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockHintsResponse(block1),
}}: {block1},
},
// Second attempt returns an error because there are no other store-gateways left.
errors.New("no store-gateway remaining after exclude"),
},
limits: &blocksStoreLimitsMock{},
expectedErr: fmt.Errorf("consistency check failed because some blocks were not queried: %s", block2.String()),
},
"multiple store-gateway instances have some missing blocks (consistency check failed)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
{ID: block3},
{ID: block4},
},
storeSetResponses: []interface{}{
// First attempt returns a client whose response does not include all expected blocks.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel}, minT+1, 2),
mockHintsResponse(block1),
}}: {block1},
&storeGatewayClientMock{remoteAddr: "2.2.2.2", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel}, minT+1, 2),
mockHintsResponse(block2),
}}: {block2},
},
// Second attempt returns an error because there are no other store-gateways left.
errors.New("no store-gateway remaining after exclude"),
},
limits: &blocksStoreLimitsMock{},
expectedErr: fmt.Errorf("consistency check failed because some blocks were not queried: %s %s", block3.String(), block4.String()),
},
"multiple store-gateway instances have some missing blocks but queried from a replica during subsequent attempts": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
{ID: block3},
{ID: block4},
},
storeSetResponses: []interface{}{
// First attempt returns a client whose response does not include all expected blocks.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT, 1),
mockHintsResponse(block1),
}}: {block1, block3},
&storeGatewayClientMock{remoteAddr: "2.2.2.2", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT, 2),
mockHintsResponse(block2),
}}: {block2, block4},
},
// Second attempt returns 1 missing block.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "3.3.3.3", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockHintsResponse(block3),
}}: {block3, block4},
},
// Third attempt returns the last missing block.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "4.4.4.4", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT+1, 3),
mockHintsResponse(block4),
}}: {block4},
},
},
limits: &blocksStoreLimitsMock{},
expectedSeries: []seriesResult{
{
lbls: labels.New(metricNameLabel, series1Label),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 2},
},
}, {
lbls: labels.New(metricNameLabel, series2Label),
values: []valueResult{
{t: minT, v: 2},
{t: minT + 1, v: 3},
},
},
},
expectedMetrics: `
# HELP cortex_querier_storegateway_instances_hit_per_query Number of store-gateway instances hit for a single query.
# TYPE cortex_querier_storegateway_instances_hit_per_query histogram
cortex_querier_storegateway_instances_hit_per_query_bucket{le="0"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="1"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="2"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="3"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="4"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="5"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="6"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="7"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="8"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="9"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="10"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_instances_hit_per_query_sum 4
cortex_querier_storegateway_instances_hit_per_query_count 1
# HELP cortex_querier_storegateway_refetches_per_query Number of re-fetches attempted while querying store-gateway instances due to missing blocks.
# TYPE cortex_querier_storegateway_refetches_per_query histogram
cortex_querier_storegateway_refetches_per_query_bucket{le="0"} 0
cortex_querier_storegateway_refetches_per_query_bucket{le="1"} 0
cortex_querier_storegateway_refetches_per_query_bucket{le="2"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_refetches_per_query_sum 2
cortex_querier_storegateway_refetches_per_query_count 1
`,
},
"max chunks per query limit greater then the number of chunks fetched": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockHintsResponse(block1, block2),
}}: {block1, block2},
},
},
limits: &blocksStoreLimitsMock{maxChunksPerQuery: 3},
expectedSeries: []seriesResult{
{
lbls: labels.New(metricNameLabel, series1Label),
values: []valueResult{
{t: minT, v: 1},
{t: minT + 1, v: 2},
},
},
},
},
"max chunks per query limit hit while fetching chunks at first attempt": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT, 1),
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockHintsResponse(block1, block2),
}}: {block1, block2},
},
},
limits: &blocksStoreLimitsMock{maxChunksPerQuery: 1},
expectedErr: validation.LimitError(fmt.Sprintf(errMaxChunksPerQueryLimit, fmt.Sprintf("{__name__=%q}", metricName), 1)),
},
"max chunks per query limit hit while fetching chunks during subsequent attempts": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
{ID: block3},
{ID: block4},
},
storeSetResponses: []interface{}{
// First attempt returns a client whose response does not include all expected blocks.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "1.1.1.1", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT, 1),
mockHintsResponse(block1),
}}: {block1, block3},
&storeGatewayClientMock{remoteAddr: "2.2.2.2", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT, 2),
mockHintsResponse(block2),
}}: {block2, block4},
},
// Second attempt returns 1 missing block.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "3.3.3.3", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series1Label}, minT+1, 2),
mockHintsResponse(block3),
}}: {block3, block4},
},
// Third attempt returns the last missing block.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{remoteAddr: "4.4.4.4", mockedSeriesResponses: []*storepb.SeriesResponse{
mockSeriesResponse(labels.Labels{metricNameLabel, series2Label}, minT+1, 3),
mockHintsResponse(block4),
}}: {block4},
},
},
limits: &blocksStoreLimitsMock{maxChunksPerQuery: 3},
expectedErr: validation.LimitError(fmt.Sprintf(errMaxChunksPerQueryLimit, fmt.Sprintf("{__name__=%q}", metricName), 3)),
},
}
for testName, testData := range tests {
t.Run(testName, func(t *testing.T) {
ctx := context.Background()
reg := prometheus.NewPedanticRegistry()
stores := &blocksStoreSetMock{mockedResponses: testData.storeSetResponses}
finder := &blocksFinderMock{}
finder.On("GetBlocks", mock.Anything, "user-1", minT, maxT).Return(testData.finderResult, map[ulid.ULID]*bucketindex.BlockDeletionMark(nil), testData.finderErr)
q := &blocksStoreQuerier{
ctx: ctx,
minT: minT,
maxT: maxT,
userID: "user-1",
finder: finder,
stores: stores,
consistency: NewBlocksConsistencyChecker(0, 0, log.NewNopLogger(), nil),
logger: log.NewNopLogger(),
metrics: newBlocksStoreQueryableMetrics(reg),
limits: testData.limits,
}
matchers := []*labels.Matcher{
labels.MustNewMatcher(labels.MatchEqual, labels.MetricName, metricName),
}
set := q.Select(true, nil, matchers...)
if testData.expectedErr != nil {
assert.EqualError(t, set.Err(), testData.expectedErr.Error())
assert.IsType(t, set.Err(), testData.expectedErr)
assert.False(t, set.Next())
assert.Nil(t, set.Warnings())
return
}
require.NoError(t, set.Err())
assert.Len(t, set.Warnings(), 0)
// Read all returned series and their values.
var actualSeries []seriesResult
for set.Next() {
var actualValues []valueResult
it := set.At().Iterator()
for it.Next() {
t, v := it.At()
actualValues = append(actualValues, valueResult{
t: t,
v: v,
})
}
require.NoError(t, it.Err())
actualSeries = append(actualSeries, seriesResult{
lbls: set.At().Labels(),
values: actualValues,
})
}
require.NoError(t, set.Err())
assert.Equal(t, testData.expectedSeries, actualSeries)
// Assert on metrics (optional, only for test cases defining it).
if testData.expectedMetrics != "" {
assert.NoError(t, testutil.GatherAndCompare(reg, strings.NewReader(testData.expectedMetrics)))
}
})
}
}
func TestBlocksStoreQuerier_Labels(t *testing.T) {
const (
metricName = "test_metric"
minT = int64(10)
maxT = int64(20)
)
var (
block1 = ulid.MustNew(1, nil)
block2 = ulid.MustNew(2, nil)
block3 = ulid.MustNew(3, nil)
block4 = ulid.MustNew(4, nil)
series1 = labels.FromMap(map[string]string{
labels.MetricName: metricName + "_1",
"series1": "1",
})
series2 = labels.FromMap(map[string]string{
labels.MetricName: metricName + "_2",
"series2": "1",
})
)
tests := map[string]struct {
finderResult bucketindex.Blocks
finderErr error
storeSetResponses []interface{}
expectedLabelNames []string
expectedLabelValues []string // For __name__
expectedErr string
expectedMetrics string
}{
"no block in the storage matching the query time range": {
finderResult: nil,
expectedErr: "",
},
"error while finding blocks matching the query time range": {
finderErr: errors.New("unable to find blocks"),
expectedErr: "unable to find blocks",
},
"error while getting clients to query the store-gateway": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
errors.New("no client found"),
},
expectedErr: "no client found",
},
"a single store-gateway instance holds the required blocks": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "1.1.1.1",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1, series2),
Warnings: []string{},
Hints: mockNamesHints(block1, block2),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1, series2),
Warnings: []string{},
Hints: mockValuesHints(block1, block2),
},
}: {block1, block2},
},
},
expectedLabelNames: namesFromSeries(series1, series2),
expectedLabelValues: valuesFromSeries(labels.MetricName, series1, series2),
},
"multiple store-gateway instances holds the required blocks without overlapping series": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "1.1.1.1",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1),
Warnings: []string{},
Hints: mockNamesHints(block1),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1),
Warnings: []string{},
Hints: mockValuesHints(block1),
},
}: {block1},
&storeGatewayClientMock{
remoteAddr: "2.2.2.2",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series2),
Warnings: []string{},
Hints: mockNamesHints(block2),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series2),
Warnings: []string{},
Hints: mockValuesHints(block2),
},
}: {block2},
},
},
expectedLabelNames: namesFromSeries(series1, series2),
expectedLabelValues: valuesFromSeries(labels.MetricName, series1, series2),
},
"multiple store-gateway instances holds the required blocks with overlapping series (single returned series)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "1.1.1.1",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1),
Warnings: []string{},
Hints: mockNamesHints(block1),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1),
Warnings: []string{},
Hints: mockValuesHints(block1),
},
}: {block1},
&storeGatewayClientMock{
remoteAddr: "2.2.2.2",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1),
Warnings: []string{},
Hints: mockNamesHints(block2),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1),
Warnings: []string{},
Hints: mockValuesHints(block2),
},
}: {block2},
},
},
expectedLabelNames: namesFromSeries(series1),
expectedLabelValues: valuesFromSeries(labels.MetricName, series1),
},
"multiple store-gateway instances holds the required blocks with overlapping series (multiple returned series)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
// Block1 has series1 and series2
// Block2 has only series1
// Block3 has only series2
storeSetResponses: []interface{}{
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "1.1.1.1",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1, series2),
Warnings: []string{},
Hints: mockNamesHints(block1),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1, series2),
Warnings: []string{},
Hints: mockValuesHints(block1),
},
}: {block1},
&storeGatewayClientMock{
remoteAddr: "2.2.2.2",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1),
Warnings: []string{},
Hints: mockNamesHints(block2),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1),
Warnings: []string{},
Hints: mockValuesHints(block2),
},
}: {block2},
&storeGatewayClientMock{
remoteAddr: "3.3.3.3",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series2),
Warnings: []string{},
Hints: mockNamesHints(block3),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series2),
Warnings: []string{},
Hints: mockValuesHints(block3),
},
}: {block3},
},
},
expectedLabelNames: namesFromSeries(series1, series2),
expectedLabelValues: valuesFromSeries(labels.MetricName, series1, series2),
expectedMetrics: `
# HELP cortex_querier_storegateway_instances_hit_per_query Number of store-gateway instances hit for a single query.
# TYPE cortex_querier_storegateway_instances_hit_per_query histogram
cortex_querier_storegateway_instances_hit_per_query_bucket{le="0"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="1"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="2"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="3"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="4"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="5"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="6"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="7"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="8"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="9"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="10"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_instances_hit_per_query_sum 3
cortex_querier_storegateway_instances_hit_per_query_count 1
# HELP cortex_querier_storegateway_refetches_per_query Number of re-fetches attempted while querying store-gateway instances due to missing blocks.
# TYPE cortex_querier_storegateway_refetches_per_query histogram
cortex_querier_storegateway_refetches_per_query_bucket{le="0"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="1"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="2"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_refetches_per_query_sum 0
cortex_querier_storegateway_refetches_per_query_count 1
`,
},
"a single store-gateway instance has some missing blocks (consistency check failed)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
},
storeSetResponses: []interface{}{
// First attempt returns a client whose response does not include all expected blocks.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "1.1.1.1",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1),
Warnings: []string{},
Hints: mockNamesHints(block1),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1),
Warnings: []string{},
Hints: mockValuesHints(block1),
},
}: {block1},
},
// Second attempt returns an error because there are no other store-gateways left.
errors.New("no store-gateway remaining after exclude"),
},
expectedErr: fmt.Sprintf("consistency check failed because some blocks were not queried: %s", block2.String()),
},
"multiple store-gateway instances have some missing blocks (consistency check failed)": {
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
{ID: block3},
{ID: block4},
},
storeSetResponses: []interface{}{
// First attempt returns a client whose response does not include all expected blocks.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "1.1.1.1",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1),
Warnings: []string{},
Hints: mockNamesHints(block1),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1),
Warnings: []string{},
Hints: mockValuesHints(block1),
},
}: {block1},
&storeGatewayClientMock{
remoteAddr: "2.2.2.2",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series2),
Warnings: []string{},
Hints: mockNamesHints(block2),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series2),
Warnings: []string{},
Hints: mockValuesHints(block2),
},
}: {block2},
},
// Second attempt returns an error because there are no other store-gateways left.
errors.New("no store-gateway remaining after exclude"),
},
expectedErr: fmt.Sprintf("consistency check failed because some blocks were not queried: %s %s", block3.String(), block4.String()),
},
"multiple store-gateway instances have some missing blocks but queried from a replica during subsequent attempts": {
// Block1 has series1
// Block2 has series2
// Block3 has series1 and series2
// Block4 has no series (poor lonely block)
finderResult: bucketindex.Blocks{
{ID: block1},
{ID: block2},
{ID: block3},
{ID: block4},
},
storeSetResponses: []interface{}{
// First attempt returns a client whose response does not include all expected blocks.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "1.1.1.1",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1),
Warnings: []string{},
Hints: mockNamesHints(block1),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1),
Warnings: []string{},
Hints: mockValuesHints(block1),
},
}: {block1, block3},
&storeGatewayClientMock{
remoteAddr: "2.2.2.2",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series2),
Warnings: []string{},
Hints: mockNamesHints(block2),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series2),
Warnings: []string{},
Hints: mockValuesHints(block2),
},
}: {block2, block4},
},
// Second attempt returns 1 missing block.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "3.3.3.3",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: namesFromSeries(series1, series2),
Warnings: []string{},
Hints: mockNamesHints(block3),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: valuesFromSeries(labels.MetricName, series1, series2),
Warnings: []string{},
Hints: mockValuesHints(block3),
},
}: {block3, block4},
},
// Third attempt returns the last missing block.
map[BlocksStoreClient][]ulid.ULID{
&storeGatewayClientMock{
remoteAddr: "4.4.4.4",
mockedLabelNamesResponse: &storepb.LabelNamesResponse{
Names: []string{},
Warnings: []string{},
Hints: mockNamesHints(block4),
},
mockedLabelValuesResponse: &storepb.LabelValuesResponse{
Values: []string{},
Warnings: []string{},
Hints: mockValuesHints(block4),
},
}: {block4},
},
},
expectedLabelNames: namesFromSeries(series1, series2),
expectedLabelValues: valuesFromSeries(labels.MetricName, series1, series2),
expectedMetrics: `
# HELP cortex_querier_storegateway_instances_hit_per_query Number of store-gateway instances hit for a single query.
# TYPE cortex_querier_storegateway_instances_hit_per_query histogram
cortex_querier_storegateway_instances_hit_per_query_bucket{le="0"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="1"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="2"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="3"} 0
cortex_querier_storegateway_instances_hit_per_query_bucket{le="4"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="5"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="6"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="7"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="8"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="9"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="10"} 1
cortex_querier_storegateway_instances_hit_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_instances_hit_per_query_sum 4
cortex_querier_storegateway_instances_hit_per_query_count 1
# HELP cortex_querier_storegateway_refetches_per_query Number of re-fetches attempted while querying store-gateway instances due to missing blocks.
# TYPE cortex_querier_storegateway_refetches_per_query histogram
cortex_querier_storegateway_refetches_per_query_bucket{le="0"} 0
cortex_querier_storegateway_refetches_per_query_bucket{le="1"} 0
cortex_querier_storegateway_refetches_per_query_bucket{le="2"} 1
cortex_querier_storegateway_refetches_per_query_bucket{le="+Inf"} 1
cortex_querier_storegateway_refetches_per_query_sum 2
cortex_querier_storegateway_refetches_per_query_count 1
`,
},
}
for testName, testData := range tests {
t.Run(testName, func(t *testing.T) {
// Splitting it because we need a new registry for names and values.
// And also the initial expectedErr checking needs to be done for both.
for _, testFunc := range []string{"LabelNames", "LabelValues"} {
ctx := context.Background()
reg := prometheus.NewPedanticRegistry()
stores := &blocksStoreSetMock{mockedResponses: testData.storeSetResponses}
finder := &blocksFinderMock{}
finder.On("GetBlocks", mock.Anything, "user-1", minT, maxT).Return(testData.finderResult, map[ulid.ULID]*bucketindex.BlockDeletionMark(nil), testData.finderErr)
q := &blocksStoreQuerier{
ctx: ctx,
minT: minT,
maxT: maxT,
userID: "user-1",
finder: finder,
stores: stores,
consistency: NewBlocksConsistencyChecker(0, 0, log.NewNopLogger(), nil),
logger: log.NewNopLogger(),
metrics: newBlocksStoreQueryableMetrics(reg),
limits: &blocksStoreLimitsMock{},
}
if testFunc == "LabelNames" {
names, warnings, err := q.LabelNames()
if testData.expectedErr != "" {
require.Equal(t, testData.expectedErr, err.Error())
continue
}
require.NoError(t, err)
require.Equal(t, 0, len(warnings))
require.Equal(t, testData.expectedLabelNames, names)
// Assert on metrics (optional, only for test cases defining it).
if testData.expectedMetrics != "" {
assert.NoError(t, testutil.GatherAndCompare(reg, strings.NewReader(testData.expectedMetrics)))
}
}
if testFunc == "LabelValues" {
values, warnings, err := q.LabelValues(labels.MetricName)
if testData.expectedErr != "" {
require.Equal(t, testData.expectedErr, err.Error())
continue