Drop Snappy compatibility mode

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

CHANGELOG.md

@@ -50,15 +50,15 @@
 * [FEATURE] Query frontend: added new query pruning middleware to enable pruning dead code (eg. expressions that cannot produce any results) and simplifying expressions (eg. expressions that can be evaluated immediately) in queries. #9086
 * [FEATURE] Ruler: added experimental configuration, `-ruler.rule-evaluation-write-enabled`, to disable writing the result of rule evaluation to ingesters. This feature can be used for testing purposes. #9060
 * [FEATURE] Ingester: added experimental configuration `ingester.ignore-ooo-exemplars`. When set to `true` out of order exemplars are no longer reported to the remote write client. #9151
-* [FEATURE] gRPC: Add flags for using respectively S2 or Snappy compatible S2 gRPC compression. #9322
-  * `-alertmanager.alertmanager-client.grpc-compression`
-  * `-ingester.client.grpc-compression`
-  * `-querier.frontend-client.grpc-compression`
-  * `-querier.scheduler-client.grpc-compression`
-  * `-query-frontend.grpc-client-config.grpc-compression`
-  * `-query-scheduler.grpc-client-config.grpc-compression`
-  * `-ruler.client.grpc-compression`
-  * `-ruler.query-frontend.grpc-client-config.grpc-compression`
+* [FEATURE] gRPC: Add flags for using S2 compression. #9322
+  * `-alertmanager.alertmanager-client.grpc-compression=s2`
+  * `-ingester.client.grpc-compression=s2`
+  * `-querier.frontend-client.grpc-compression=s2`
+  * `-querier.scheduler-client.grpc-compression=s2`
+  * `-query-frontend.grpc-client-config.grpc-compression=s2`
+  * `-query-scheduler.grpc-client-config.grpc-compression=s2`
+  * `-ruler.client.grpc-compression=s2`
+  * `-ruler.query-frontend.grpc-client-config.grpc-compression=s2`
 * [ENHANCEMENT] Compactor: Add `cortex_compactor_compaction_job_duration_seconds` and `cortex_compactor_compaction_job_blocks` histogram metrics to track duration of individual compaction jobs and number of blocks per job. #8371
 * [ENHANCEMENT] Rules: Added per namespace max rules per rule group limit. The maximum number of rules per rule groups for all namespaces continues to be configured by `-ruler.max-rules-per-rule-group`, but now, this can be superseded by the new `-ruler.max-rules-per-rule-group-by-namespace` option on a per namespace basis. This new limit can be overridden using the overrides mechanism to be applied per-tenant. #8378
 * [ENHANCEMENT] Rules: Added per namespace max rule groups per tenant limit. The maximum number of rule groups per rule tenant for all namespaces continues to be configured by `-ruler.max-rule-groups-per-tenant`, but now, this can be superseded by the new `-ruler.max-rule-groups-per-tenant-by-namespace` option on a per namespace basis. This new limit can be overridden using the overrides mechanism to be applied per-tenant. #8425

cmd/mimir/config-descriptor.json

@@ -2101,7 +2101,7 @@
               "kind": "field",
               "name": "grpc_compression",
               "required": false,
-              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
               "fieldValue": null,
               "fieldDefaultValue": "",
               "fieldFlag": "ingester.client.grpc-compression",
@@ -4838,7 +4838,7 @@
               "kind": "field",
               "name": "grpc_compression",
               "required": false,
-              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
               "fieldValue": null,
               "fieldDefaultValue": "",
               "fieldFlag": "querier.frontend-client.grpc-compression",
@@ -5100,7 +5100,7 @@
               "kind": "field",
               "name": "grpc_compression",
               "required": false,
-              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
               "fieldValue": null,
               "fieldDefaultValue": "",
               "fieldFlag": "querier.scheduler-client.grpc-compression",
@@ -5491,7 +5491,7 @@
               "kind": "field",
               "name": "grpc_compression",
               "required": false,
-              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
               "fieldValue": null,
               "fieldDefaultValue": "",
               "fieldFlag": "query-frontend.grpc-client-config.grpc-compression",
@@ -11455,7 +11455,7 @@
               "kind": "field",
               "name": "grpc_compression",
               "required": false,
-              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
               "fieldValue": null,
               "fieldDefaultValue": "",
               "fieldFlag": "ruler.client.grpc-compression",
@@ -12420,7 +12420,7 @@
                   "kind": "field",
                   "name": "grpc_compression",
                   "required": false,
-                  "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+                  "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
                   "fieldValue": null,
                   "fieldDefaultValue": "",
                   "fieldFlag": "ruler.query-frontend.grpc-client-config.grpc-compression",
@@ -14677,7 +14677,7 @@
               "kind": "field",
               "name": "grpc_compression",
               "required": false,
-              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
               "fieldValue": null,
               "fieldDefaultValue": "",
               "fieldFlag": "alertmanager.alertmanager-client.grpc-compression",
@@ -16254,7 +16254,7 @@
               "kind": "field",
               "name": "grpc_compression",
               "required": false,
-              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)",
+              "desc": "Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)",
               "fieldValue": null,
               "fieldDefaultValue": "",
               "fieldFlag": "query-scheduler.grpc-client-config.grpc-compression",

cmd/mimir/help-all.txt.tmpl

@@ -154,7 +154,7 @@ Usage of ./cmd/mimir/mimir:
   -alertmanager.alertmanager-client.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -alertmanager.alertmanager-client.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -alertmanager.alertmanager-client.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -alertmanager.alertmanager-client.grpc-max-send-msg-size int
@@ -1414,7 +1414,7 @@ Usage of ./cmd/mimir/mimir:
   -ingester.client.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -ingester.client.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -ingester.client.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -ingester.client.grpc-max-send-msg-size int
@@ -1868,7 +1868,7 @@ Usage of ./cmd/mimir/mimir:
   -querier.frontend-client.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -querier.frontend-client.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -querier.frontend-client.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -querier.frontend-client.grpc-max-send-msg-size int
@@ -1972,7 +1972,7 @@ Usage of ./cmd/mimir/mimir:
   -querier.scheduler-client.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -querier.scheduler-client.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -querier.scheduler-client.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -querier.scheduler-client.grpc-max-send-msg-size int
@@ -2050,7 +2050,7 @@ Usage of ./cmd/mimir/mimir:
   -query-frontend.grpc-client-config.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -query-frontend.grpc-client-config.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -query-frontend.grpc-client-config.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -query-frontend.grpc-client-config.grpc-max-send-msg-size int
@@ -2256,7 +2256,7 @@ Usage of ./cmd/mimir/mimir:
   -query-scheduler.grpc-client-config.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -query-scheduler.grpc-client-config.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -query-scheduler.grpc-client-config.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -query-scheduler.grpc-client-config.grpc-max-send-msg-size int
@@ -2628,7 +2628,7 @@ Usage of ./cmd/mimir/mimir:
   -ruler.client.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -ruler.client.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -ruler.client.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -ruler.client.grpc-max-send-msg-size int
@@ -2716,7 +2716,7 @@ Usage of ./cmd/mimir/mimir:
   -ruler.query-frontend.grpc-client-config.grpc-client-rate-limit-burst int
     	Rate limit burst for gRPC client.
   -ruler.query-frontend.grpc-client-config.grpc-compression string
-    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+    	Use compression when sending messages. Supported values are: 'gzip', 'snappy', 's2' and '' (disable compression)
   -ruler.query-frontend.grpc-client-config.grpc-max-recv-msg-size int
     	gRPC client max receive message size (bytes). (default 104857600)
   -ruler.query-frontend.grpc-client-config.grpc-max-send-msg-size int

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

@@ -2337,7 +2337,7 @@ alertmanager_client:
   [max_send_msg_size: <int> | default = 104857600]
 
   # (advanced) Use compression when sending messages. Supported values are:
-  # 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+  # 'gzip', 'snappy', 's2' and '' (disable compression)
   # CLI flag: -alertmanager.alertmanager-client.grpc-compression
   [grpc_compression: <string> | default = ""]
 
@@ -2600,7 +2600,7 @@ The `grpc_client` block configures the gRPC client used to communicate between t
 [max_send_msg_size: <int> | default = 104857600]
 
 # (advanced) Use compression when sending messages. Supported values are:
-# 'gzip', 'snappy', 's2', 's2-snappy' and '' (disable compression)
+# 'gzip', 'snappy', 's2' and '' (disable compression)
 # CLI flag: -<prefix>.grpc-compression
 [grpc_compression: <string> | default = ""]
 

pkg/alertmanager/alertmanager_client.go

@@ -46,7 +46,7 @@ type ClientConfig struct {
 
 // RegisterFlagsWithPrefix registers flags with prefix.
 func (cfg *ClientConfig) RegisterFlagsWithPrefix(prefix string, f *flag.FlagSet) {
-	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name}
 	cfg.GRPCClientConfig.RegisterFlagsWithPrefix(prefix, f)
 	f.DurationVar(&cfg.RemoteTimeout, prefix+".remote-timeout", 2*time.Second, "Timeout for downstream alertmanagers.")
 }

pkg/frontend/v2/frontend.go

@@ -77,7 +77,7 @@ func (cfg *Config) RegisterFlags(f *flag.FlagSet, logger log.Logger) {
 	f.StringVar(&cfg.Addr, "query-frontend.instance-addr", "", "IP address to advertise to the querier (via scheduler) (default is auto-detected from network interfaces).")
 	f.IntVar(&cfg.Port, "query-frontend.instance-port", 0, "Port to advertise to querier (via scheduler) (defaults to server.grpc-listen-port).")
 
-	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name}
 	cfg.GRPCClientConfig.RegisterFlagsWithPrefix("query-frontend.grpc-client-config", f)
 }
 

pkg/ingester/client/client.go

@@ -71,7 +71,7 @@ type Config struct {
 
 // RegisterFlags registers configuration settings used by the ingester client config.
 func (cfg *Config) RegisterFlags(f *flag.FlagSet) {
-	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name}
 	cfg.GRPCClientConfig.RegisterFlagsWithPrefix("ingester.client", f)
 }
 

pkg/querier/worker/worker.go

@@ -49,9 +49,9 @@ func (cfg *Config) RegisterFlags(f *flag.FlagSet) {
 	f.StringVar(&cfg.QuerierID, "querier.id", "", "Querier ID, sent to the query-frontend to identify requests from the same querier. Defaults to hostname.")
 	f.BoolVar(&cfg.ResponseStreamingEnabled, "querier.response-streaming-enabled", false, "Enables streaming of responses from querier to query-frontend for response types that support it (currently only `active_series` responses do).")
 
-	cfg.QueryFrontendGRPCClientConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	cfg.QueryFrontendGRPCClientConfig.CustomCompressors = []string{s2.Name}
 	cfg.QueryFrontendGRPCClientConfig.RegisterFlagsWithPrefix("querier.frontend-client", f)
-	cfg.QuerySchedulerGRPCClientConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	cfg.QuerySchedulerGRPCClientConfig.CustomCompressors = []string{s2.Name}
 	cfg.QuerySchedulerGRPCClientConfig.RegisterFlagsWithPrefix("querier.scheduler-client", f)
 }
 

pkg/ruler/remotequerier.go

@@ -76,7 +76,7 @@ func (c *QueryFrontendConfig) RegisterFlags(f *flag.FlagSet) {
 		"GRPC listen address of the query-frontend(s). Must be a DNS address (prefixed with dns:///) "+
 			"to enable client side load balancing.")
 
-	c.GRPCClientConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	c.GRPCClientConfig.CustomCompressors = []string{s2.Name}
 	c.GRPCClientConfig.RegisterFlagsWithPrefix("ruler.query-frontend.grpc-client-config", f)
 
 	f.StringVar(&c.QueryResultResponseFormat, "ruler.query-frontend.query-result-response-format", formatProtobuf, fmt.Sprintf("Format to use when retrieving query results from query-frontends. Supported values: %s", strings.Join(allFormats, ", ")))

pkg/ruler/ruler.go

@@ -168,7 +168,7 @@ func (cfg *Config) Validate(limits validation.Limits) error {
 
 // RegisterFlags adds the flags required to config this to the given FlagSet
 func (cfg *Config) RegisterFlags(f *flag.FlagSet, logger log.Logger) {
-	cfg.ClientTLSConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	cfg.ClientTLSConfig.CustomCompressors = []string{s2.Name}
 	cfg.ClientTLSConfig.RegisterFlagsWithPrefix("ruler.client", f)
 	cfg.Ring.RegisterFlags(f, logger)
 	cfg.Notifier.RegisterFlags(f)

pkg/scheduler/scheduler.go

@@ -107,7 +107,7 @@ func (cfg *Config) RegisterFlags(f *flag.FlagSet, logger log.Logger) {
 	f.BoolVar(&cfg.PrioritizeQueryComponents, "query-scheduler.prioritize-query-components", false, "When enabled, the query scheduler primarily prioritizes dequeuing fairly from queue components and secondarily prioritizes dequeuing fairly across tenants. When disabled, the query scheduler primarily prioritizes tenant fairness. You must enable the `query-scheduler.use-multi-algorithm-query-queue` setting to use this flag.")
 	f.DurationVar(&cfg.QuerierForgetDelay, "query-scheduler.querier-forget-delay", 0, "If a querier disconnects without sending notification about graceful shutdown, the query-scheduler will keep the querier in the tenant's shard until the forget delay has passed. This feature is useful to reduce the blast radius when shuffle-sharding is enabled.")
 
-	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name, s2.SnappyCompatName}
+	cfg.GRPCClientConfig.CustomCompressors = []string{s2.Name}
 	cfg.GRPCClientConfig.RegisterFlagsWithPrefix("query-scheduler.grpc-client-config", f)
 	cfg.ServiceDiscovery.RegisterFlags(f, logger)
 }

pkg/util/grpcencoding/s2/s2.go

@@ -19,8 +19,6 @@ import (
 const (
 	// Name is the name of the S2 compressor.
 	Name = "s2"
-	// SnappyCompatName is the name of the Snappy compatible S2 compressor.
-	SnappyCompatName = "s2-snappy"
 )
 
 type compressor struct {
@@ -40,21 +38,13 @@ type reader struct {
 }
 
 func init() {
-	encoding.RegisterCompressor(newCompressor(false))
-	encoding.RegisterCompressor(newCompressor(true))
+	encoding.RegisterCompressor(newCompressor())
 }
 
-func newCompressor(snappyCompat bool) *compressor {
+func newCompressor() *compressor {
 	opts := []s2.WriterOption{s2.WriterConcurrency(1)}
-	var name string
-	if snappyCompat {
-		opts = append(opts, s2.WriterSnappyCompat())
-		name = SnappyCompatName
-	} else {
-		name = Name
-	}
 	c := &compressor{
-		name: name,
+		name: Name,
 	}
 	c.poolCompressor.New = func() interface{} {
 		w := s2.NewWriter(io.Discard, opts...)