Fix querier.max-query-lookback docs for accuracy

Signed-off-by: György Krajcsovits <[email protected]>

cmd/mimir/config-descriptor.json

@@ -3756,7 +3756,7 @@
           "kind": "field",
           "name": "max_query_lookback",
           "required": false,
-          "desc": "Limit how long back data (series and metadata) can be queried, up until \u003clookback\u003e duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range, series metadata and remote read queries. For label name and value queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.",
+          "desc": "Limit how long back data (series and metadata) can be queried, up until \u003clookback\u003e duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range and remote read queries. For metadata queries like series, label names, label values queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.",
           "fieldValue": null,
           "fieldDefaultValue": 0,
           "fieldFlag": "querier.max-query-lookback",

cmd/mimir/help-all.txt.tmpl

@@ -1784,7 +1784,7 @@ Usage of ./cmd/mimir/mimir:
   -querier.max-query-into-future duration
     	[deprecated] Maximum duration into the future you can query. 0 to disable. (default 10m0s)
   -querier.max-query-lookback duration
-    	Limit how long back data (series and metadata) can be queried, up until <lookback> duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range, series metadata and remote read queries. For label name and value queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.
+    	Limit how long back data (series and metadata) can be queried, up until <lookback> duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range and remote read queries. For metadata queries like series, label names, label values queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.
   -querier.max-query-parallelism int
     	Maximum number of split (by time) or partial (by shard) queries that will be scheduled in parallel by the query-frontend for a single input query. This limit is introduced to have a fairer query scheduling and avoid a single query over a large time range saturating all available queriers. (default 14)
   -querier.max-samples int

cmd/mimir/help.txt.tmpl

@@ -468,7 +468,7 @@ Usage of ./cmd/mimir/mimir:
   -querier.max-partial-query-length duration
     	Limit the time range for partial queries at the querier level.
   -querier.max-query-lookback duration
-    	Limit how long back data (series and metadata) can be queried, up until <lookback> duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range, series metadata and remote read queries. For label name and value queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.
+    	Limit how long back data (series and metadata) can be queried, up until <lookback> duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range and remote read queries. For metadata queries like series, label names, label values queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.
   -querier.max-query-parallelism int
     	Maximum number of split (by time) or partial (by shard) queries that will be scheduled in parallel by the query-frontend for a single input query. This limit is introduced to have a fairer query scheduling and avoid a single query over a large time range saturating all available queriers. (default 14)
   -querier.max-samples int

docs/sources/mimir/configure/configuration-parameters/index.md

@@ -3262,11 +3262,11 @@ The `limits` block configures default and per-tenant limits imposed by component
 
 # Limit how long back data (series and metadata) can be queried, up until
 # <lookback> duration ago. This limit is enforced in the query-frontend, querier
-# and ruler for instant, range, series metadata and remote read queries. For
-# label name and value queries the limit is enforced in the querier and ruler.
-# If the requested time range is outside the allowed range, the request will not
-# fail but will be manipulated to only query data within the allowed time range.
-# 0 to disable.
+# and ruler for instant, range and remote read queries. For metadata queries
+# like series, label names, label values queries the limit is enforced in the
+# querier and ruler. If the requested time range is outside the allowed range,
+# the request will not fail but will be manipulated to only query data within
+# the allowed time range. 0 to disable.
 # CLI flag: -querier.max-query-lookback
 [max_query_lookback: <duration> | default = 0s]
 

pkg/util/validation/limits.go

@@ -281,7 +281,7 @@ func (l *Limits) RegisterFlags(f *flag.FlagSet) {
 	f.IntVar(&l.MaxFetchedChunkBytesPerQuery, MaxChunkBytesPerQueryFlag, 0, "The maximum size of all chunks in bytes that a query can fetch from ingesters and store-gateways. This limit is enforced in the querier and ruler. 0 to disable.")
 	f.Uint64Var(&l.MaxEstimatedMemoryConsumptionPerQuery, MaxEstimatedMemoryConsumptionPerQueryFlag, 0, "The maximum estimated memory a single query can consume at once, in bytes. This limit is only enforced when Mimir's query engine is in use. This limit is enforced in the querier. 0 to disable.")
 	f.Var(&l.MaxPartialQueryLength, MaxPartialQueryLengthFlag, "Limit the time range for partial queries at the querier level.")
-	f.Var(&l.MaxQueryLookback, "querier.max-query-lookback", "Limit how long back data (series and metadata) can be queried, up until <lookback> duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range, series metadata and remote read queries. For label name and value queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.")
+	f.Var(&l.MaxQueryLookback, "querier.max-query-lookback", "Limit how long back data (series and metadata) can be queried, up until <lookback> duration ago. This limit is enforced in the query-frontend, querier and ruler for instant, range and remote read queries. For metadata queries like series, label names, label values queries the limit is enforced in the querier and ruler. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.")
 	f.IntVar(&l.MaxQueryParallelism, "querier.max-query-parallelism", 14, "Maximum number of split (by time) or partial (by shard) queries that will be scheduled in parallel by the query-frontend for a single input query. This limit is introduced to have a fairer query scheduling and avoid a single query over a large time range saturating all available queriers.")
 	f.Var(&l.MaxLabelsQueryLength, "store.max-labels-query-length", "Limit the time range (end - start time) of series, label names and values queries. This limit is enforced in the querier. If the requested time range is outside the allowed range, the request will not fail but will be manipulated to only query data within the allowed time range. 0 to disable.")
 	f.IntVar(&l.LabelNamesAndValuesResultsMaxSizeBytes, "querier.label-names-and-values-results-max-size-bytes", 400*1024*1024, "Maximum size in bytes of distinct label names and values. When querier receives response from ingester, it merges the response with responses from other ingesters. This maximum size limit is applied to the merged(distinct) results. If the limit is reached, an error is returned.")