Always enable zone stable shuffle sharding for store gateway (#6161)

* always use zone stable shuffle sharding for store gateway

Signed-off-by: Ben Ye <[email protected]>

* update doc

Signed-off-by: Ben Ye <[email protected]>

* changelog

Signed-off-by: Ben Ye <[email protected]>

---------

Signed-off-by: Ben Ye <[email protected]>

Author: yeya24

CHANGELOG.md

@@ -12,6 +12,7 @@
 * [CHANGE] Ruler: Scheduling `ruler.evaluation-delay-duration` to be deprecated. Use the highest value between `ruler.evaluation-delay-duration` and `ruler.query-offset` #6149
 * [CHANGE] Querier: Remove `-querier.at-modifier-enabled` flag. #6157
 * [CHANGE] Tracing: Remove deprecated `oltp_endpoint` config entirely. #6158
+* [CHANGE] Store Gateway: Enable store gateway zone stable shuffle sharding by default. #6161
 * [FEATURE] Ingester/Distributor: Experimental: Enable native histogram ingestion via `-blocks-storage.tsdb.enable-native-histograms` flag. #5986 #6010 #6020
 * [FEATURE] Querier: Enable querying native histogram chunks. #5944 #6031
 * [FEATURE] Query Frontend: Support native histogram in query frontend response. #5996 #6043

pkg/storegateway/gateway_ring.go

@@ -106,7 +106,7 @@ func (cfg *RingConfig) RegisterFlags(f *flag.FlagSet) {
 	f.StringVar(&cfg.TokensFilePath, ringFlagsPrefix+"tokens-file-path", "", "File path where tokens are stored. If empty, tokens are not stored at shutdown and restored at startup.")
 	f.BoolVar(&cfg.ZoneAwarenessEnabled, ringFlagsPrefix+"zone-awareness-enabled", false, "True to enable zone-awareness and replicate blocks across different availability zones.")
 	f.BoolVar(&cfg.KeepInstanceInTheRingOnShutdown, ringFlagsPrefix+"keep-instance-in-the-ring-on-shutdown", false, "True to keep the store gateway instance in the ring when it shuts down. The instance will then be auto-forgotten from the ring after 10*heartbeat_timeout.")
-	f.BoolVar(&cfg.ZoneStableShuffleSharding, ringFlagsPrefix+"zone-stable-shuffle-sharding", false, "If true, use zone stable shuffle sharding algorithm. Otherwise, use the default shuffle sharding algorithm.")
+	f.BoolVar(&cfg.ZoneStableShuffleSharding, ringFlagsPrefix+"zone-stable-shuffle-sharding", true, "If true, use zone stable shuffle sharding algorithm. Otherwise, use the default shuffle sharding algorithm.")
 
 	// Wait stability flags.
 	f.DurationVar(&cfg.WaitStabilityMinDuration, ringFlagsPrefix+"wait-stability-min-duration", time.Minute, "Minimum time to wait for ring stability at startup. 0 to disable.")