Remove experimental tag on WAL

CHANGELOG.md

@@ -48,6 +48,7 @@
 * [ENHANCEMENT] query-frontend now also logs the POST data of long queries. #2481
 * [ENHANCEMENT] Experimental WAL: Ingester WAL records now have type header and the custom WAL records have been replaced by Prometheus TSDB's WAL records. Old records will not be supported from 1.3 onwards. Note: once this is deployed, you cannot downgrade without data loss. #2436
 * [ENHANCEMENT] Redis Cache: Added `idle_timeout`, `wait_on_pool_exhaustion` and `max_conn_lifetime` options to redis cache configuration. #2550
+* [ENHANCEMENT] WAL: the experimental tag has been removed on the WAL in ingesters.
 * [BUGFIX] Ruler: Ensure temporary rule files with special characters are properly mapped and cleaned up. #2506
 * [BUGFIX] Fixes #2411, Ensure requests are properly routed to the prometheus api embedded in the query if `-server.path-prefix` is set. #2372
 * [BUGFIX] Experimental TSDB: fixed chunk data corruption when querying back series using the experimental blocks storage. #2400

docs/production/ingesters-with-wal.md

@@ -9,8 +9,6 @@ Currently the ingesters running in the chunks storage mode, store all their data
 
 To use WAL, there are some changes that needs to be made in the deployment.
 
-_The WAL is currently considered experimental._
-
 ## Changes to deployment
 
 1. Since ingesters need to have the same persistent volume across restarts/rollout, all the ingesters should be run on [statefulset](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/) with fixed volumes.

pkg/ingester/wal.go

@@ -110,8 +110,6 @@ func newWAL(cfg WALConfig, userStatesFunc func() map[string]*userState, register
 		return &noopWAL{}, nil
 	}
 
-	util.WarnExperimentalUse("Chunks WAL")
-
 	var walRegistry prometheus.Registerer
 	if registerer != nil {
 		walRegistry = prometheus.WrapRegistererWith(prometheus.Labels{"kind": "wal"}, registerer)