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Update according to code review

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Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>
This commit is contained in:
Jeanette Tan 2023-05-05 02:29:50 +08:00
parent 19a4f314f5
commit 40240c9c1c
4 changed files with 13 additions and 12 deletions
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2
config/config.go
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@ -491,7 +491,7 @@ type ScrapeConfig struct {
LabelValueLengthLimit uint `yaml:"label_value_length_limit,omitempty"`
// More than this many buckets in a native histogram will cause the scrape to
// fail.
NativeHistogramBucketLimit uint `yaml:"bucket_limit,omitempty"`
NativeHistogramBucketLimit uint `yaml:"native_histogram_bucket_limit,omitempty"`
// We cannot do proper Go type embedding below as the parser will then parse
// values arbitrarily into the overflow maps of further-down types.

8
docs/configuration/configuration.md
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@ -377,10 +377,10 @@ metric_relabel_configs:
# change in the future.
[ target_limit: <int> | default = 0 ]
# Limit on total number of positive and negative buckets allowed in a native
# histogram. If this is exceeded, the entire scrape will be treated as failed.
# 0 means no limit.
[ sample_limit: <int> | default = 0 ]
# Limit on total number of positive and negative buckets allowed in a single
# native histogram. If this is exceeded, the entire scrape will be treated as
# failed. 0 means no limit.
[ native_histogram_bucket_limit: <int> | default = 0 ]
```
Where `<job_name>` must be unique across all scrape configurations.

1
scrape/clientprotobuf.go
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@ -18,6 +18,7 @@ import (
"encoding/binary"
"github.com/gogo/protobuf/proto"
// Intentionally using client model to simulate client in tests.
dto "github.com/prometheus/client_model/go"
)

14
scrape/scrape.go
View File

@ -193,8 +193,8 @@ var (
)
targetScrapeNativeHistogramBucketLimit = prometheus.NewCounter(
prometheus.CounterOpts{
Name: "prometheus_target_scrapes_histogram_exceeded_bucket_limit_total",
Help: "Total number of scrapes that hit the native histograms bucket limit and were rejected.",
Name: "prometheus_target_scrapes_exceeded_native_histogram_bucket_limit_total",
Help: "Total number of scrapes that hit the native histogram bucket limit and were rejected.",
},
)
)
@ -744,17 +744,17 @@ func mutateReportSampleLabels(lset labels.Labels, target *Target) labels.Labels
}
// appender returns an appender for ingested samples from the target.
func appender(app storage.Appender, limit, bucketLimit int) storage.Appender {
func appender(app storage.Appender, sampleLimit, bucketLimit int) storage.Appender {
app = &timeLimitAppender{
Appender: app,
maxTime: timestamp.FromTime(time.Now().Add(maxAheadTime)),
}
// The limit is applied after metrics are potentially dropped via relabeling.
if limit > 0 {
// The sampleLimit is applied after metrics are potentially dropped via relabeling.
if sampleLimit > 0 {
app = &limitAppender{
Appender: app,
limit: limit,
limit: sampleLimit,
}
}
@ -1707,7 +1707,7 @@ loop:
}
if bucketLimitErr != nil {
if err == nil {
err = bucketLimitErr // if sample limit is hit, that error takes precedence
err = bucketLimitErr // If sample limit is hit, that error takes precedence.
}
// We only want to increment this once per scrape, so this is Inc'd outside the loop.
targetScrapeNativeHistogramBucketLimit.Inc()