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Querier ignore 'The specified key does not exist' error #97

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Merged
merged 2 commits into from
Nov 8, 2024
Merged

Querier ignore 'The specified key does not exist' error #97

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f0e4f52
Querier ignore 'The specified key does not exist' error
hczhu-db Nov 7, 2024
0f908d3
Move the ignore logic inside group_replica branch
hczhu-db Nov 7, 2024
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19 changes: 15 additions & 4 deletions pkg/store/proxy.go
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Original file line number Diff line number Diff line change
Expand Up @@ -102,8 +102,9 @@ type ProxyStore struct {
}

type proxyStoreMetrics struct {
emptyStreamResponses prometheus.Counter
storeFailureCount *prometheus.CounterVec
emptyStreamResponses prometheus.Counter
storeFailureCount *prometheus.CounterVec
missingBlockFileErrorCount prometheus.Counter
}

func newProxyStoreMetrics(reg prometheus.Registerer) *proxyStoreMetrics {
Expand All @@ -117,6 +118,10 @@ func newProxyStoreMetrics(reg prometheus.Registerer) *proxyStoreMetrics {
Name: "thanos_proxy_store_failure_total",
Help: "Total number of store failures.",
}, []string{"group", "replica"})
m.missingBlockFileErrorCount = promauto.With(reg).NewCounter(prometheus.CounterOpts{
Name: "thanos_proxy_querier_missing_block_file_error_total",
Help: "Total number of missing block file errors.",
})

return &m
}
Expand Down Expand Up @@ -421,11 +426,17 @@ func (s *ProxyStore) Series(originalRequest *storepb.SeriesRequest, srv storepb.
if resp.GetWarning() != "" {
totalFailedStores++
maxWarningBytes := 2000
shouldIgnore := strings.Contains(resp.GetWarning(), "The specified key does not exist")
warning := resp.GetWarning()[:min(maxWarningBytes, len(resp.GetWarning()))]
level.Error(s.logger).Log("msg", "Store failure with warning", "warning", warning)
level.Error(s.logger).Log("msg", "Store failure with warning", "warning", warning, "should_ignore", shouldIgnore)
// Don't have group/replica keys here, so we can't attribute the warning to a specific store.
s.metrics.storeFailureCount.WithLabelValues("", "").Inc()
if r.PartialResponseStrategy == storepb.PartialResponseStrategy_GROUP_REPLICA {
if shouldIgnore {
level.Warn(s.logger).Log("msg", "Ignore 'the specified key does not exist' error from Store")
// Ignore this error for now because we know the missing block file is already deleted by compactor.
// There is no other reason for this error to occur.
s.metrics.missingBlockFileErrorCount.Inc()
} else if r.PartialResponseStrategy == storepb.PartialResponseStrategy_GROUP_REPLICA {
// TODO: attribute the warning to the store(group key and replica key) that produced it.
// Each client streams a sequence of time series, so it's not trivial to attribute the warning to a specific client.
if totalFailedStores > 1 {
Expand Down
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