Re-ordered experimental features in the CHANGELOG moving them to the bottom

Signed-off-by: Marco Pracucci <[email protected]>

Author: pracucci

CHANGELOG.md

@@ -56,8 +56,6 @@ Cortex `0.7.0` introduces some **breaking changes**. You're encouraged to read a
 * [CHANGE] Experimental TSDB: switched the blocks storage index header to the binary format. This change is expected to have no visible impact, except lower startup times and memory usage in the queriers. It's possible to switch back to the old JSON format via the flag `-experimental.tsdb.bucket-store.binary-index-header-enabled=false`. #2223
 * [CHANGE] Experimental Memberlist KV store can now be used in single-binary Cortex. Attempts to use it previously would fail with panic. This change also breaks existing binary protocol used to exchange gossip messages, so this version will not be able to understand gossiped Ring when used in combination with the previous version of Cortex. Easiest way to upgrade is to shutdown old Cortex installation, and restart it with new version. Incremental rollout works too, but with reduced functionality until all components run the same version. #2016
 * [FEATURE] Added a read-only local alertmanager config store using files named corresponding to their tenant id. #2125
-* [FEATURE] Added user sub rings to distribute users to a subset of ingesters. #1947
-  * `-experimental.distributor.user-subring-size`
 * [FEATURE] Added flag `-experimental.ruler.enable-api` to enable the ruler api which implements the Prometheus API `/api/v1/rules` and `/api/v1/alerts` endpoints under the configured `-http.prefix`. #1999
 * [FEATURE] Added sharding support to compactor when using the experimental TSDB blocks storage. #2113
 * [FEATURE] Added ability to override YAML config file settings using environment variables. #2147
@@ -67,8 +65,6 @@ Cortex `0.7.0` introduces some **breaking changes**. You're encouraged to read a
   * `-configs.notifications.disable-webhook`
 * [FEATURE] Add /config HTTP endpoint which exposes the current Cortex configuration as YAML. #2165
 * [FEATURE] Allow Prometheus remote write directly to ingesters. #1491
-* [FEATURE] Add flag `-experimental.tsdb.stripe-size` to expose TSDB stripe size option. #2185
-* [FEATURE] Experimental Delete Series: Added support for Deleting Series with Prometheus style API. Needs to be enabled first by setting `-purger.enable` to `true`. Deletion only supported when using `boltdb` and `filesystem` as index and object store respectively. Support for other stores to follow in separate PRs #2103
 * [FEATURE] Introduced new standalone service `query-tee` that can be used for testing purposes to send the same Prometheus query to multiple backends (ie. two Cortex clusters ingesting the same metrics) and compare the performances. #2203
 * [FEATURE] Fan out parallelizable queries to backend queriers concurrently. #1878
   * `querier.parallelise-shardable-queries` (bool)
@@ -80,14 +76,13 @@ Cortex `0.7.0` introduces some **breaking changes**. You're encouraged to read a
     * `querier.max-query-parallelism`
     * `querier.max-concurrent`
     * `server.grpc-max-concurrent-streams` (for both query-frontends and queriers)
+* [FEATURE] Added user sub rings to distribute users to a subset of ingesters. #1947
+  * `-experimental.distributor.user-subring-size`
+* [FEATURE] Add flag `-experimental.tsdb.stripe-size` to expose TSDB stripe size option. #2185
+* [FEATURE] Experimental Delete Series: Added support for Deleting Series with Prometheus style API. Needs to be enabled first by setting `-purger.enable` to `true`. Deletion only supported when using `boltdb` and `filesystem` as index and object store respectively. Support for other stores to follow in separate PRs #2103
 * [ENHANCEMENT] Alertmanager: Expose Per-tenant alertmanager metrics #2124
 * [ENHANCEMENT] Add `status` label to `cortex_alertmanager_configs` metric to gauge the number of valid and invalid configs. #2125
 * [ENHANCEMENT] Cassandra Authentication: added the `custom_authenticators` config option that allows users to authenticate with cassandra clusters using password authenticators that are not approved by default in [gocql](https://github.com/gocql/gocql/blob/81b8263d9fe526782a588ef94d3fa5c6148e5d67/conn.go#L27) #2093
-* [ENHANCEMENT] Experimental TSDB: Export TSDB Syncer metrics from Compactor component, they are prefixed with `cortex_compactor_`. #2023
-* [ENHANCEMENT] Experimental TSDB: Added dedicated flag `-experimental.tsdb.bucket-store.tenant-sync-concurrency` to configure the maximum number of concurrent tenants for which blocks are synched. #2026
-* [ENHANCEMENT] Experimental TSDB: Expose metrics for objstore operations (prefixed with `cortex_<component>_thanos_objstore_`, component being one of `ingester`, `querier` and `compactor`). #2027
-* [ENHANCEMENT] Experimental TSDB: Added support for Azure Storage to be used for block storage, in addition to S3 and GCS. #2083
-* [ENHANCEMENT] Experimental TSDB: Reduced memory allocations in the ingesters when using the experimental blocks storage. #2057
 * [ENHANCEMENT] Cassandra Storage: added `max_retries`, `retry_min_backoff` and `retry_max_backoff` configuration options to enable retrying recoverable errors. #2054
 * [ENHANCEMENT] Allow to configure HTTP and gRPC server listen address, maximum number of simultaneous connections and connection keepalive settings.
   * `-server.http-listen-address`
@@ -102,21 +97,26 @@ Cortex `0.7.0` introduces some **breaking changes**. You're encouraged to read a
 * [ENHANCEMENT] PostgreSQL: Bump up `github.com/lib/pq` from `v1.0.0` to `v1.3.0` to support PostgreSQL SCRAM-SHA-256 authentication. #2097
 * [ENHANCEMENT] Cassandra Storage: User no longer need `CREATE` privilege on `<all keyspaces>` if given keyspace exists. #2032
 * [ENHANCEMENT] Cassandra Storage: added `password_file` configuration options to enable reading Cassandra password from file. #2096
-* [ENHANCEMENT] Experimental Memberlist KV: expose `-memberlist.gossip-to-dead-nodes-time` and `-memberlist.dead-node-reclaim-time` options to control how memberlist library handles dead nodes and name reuse. #2131
 * [ENHANCEMENT] Configs API: Allow GET/POST configs in YAML format. #2181
 * [ENHANCEMENT] Background cache writes are batched to improve parallelism and observability. #2135
 * [ENHANCEMENT] Add automatic repair for checkpoint and WAL. #2105
 * [ENHANCEMENT] Support `lastEvaluation` and `evaluationTime` in `/api/v1/rules` endpoints and make order of groups stable. #2196
 * [ENHANCEMENT] Skip expired requests in query-frontend scheduling. #2082
+* [ENHANCEMENT] Experimental TSDB: Export TSDB Syncer metrics from Compactor component, they are prefixed with `cortex_compactor_`. #2023
+* [ENHANCEMENT] Experimental TSDB: Added dedicated flag `-experimental.tsdb.bucket-store.tenant-sync-concurrency` to configure the maximum number of concurrent tenants for which blocks are synched. #2026
+* [ENHANCEMENT] Experimental TSDB: Expose metrics for objstore operations (prefixed with `cortex_<component>_thanos_objstore_`, component being one of `ingester`, `querier` and `compactor`). #2027
+* [ENHANCEMENT] Experimental TSDB: Added support for Azure Storage to be used for block storage, in addition to S3 and GCS. #2083
+* [ENHANCEMENT] Experimental TSDB: Reduced memory allocations in the ingesters when using the experimental blocks storage. #2057
+* [ENHANCEMENT] Experimental Memberlist KV: expose `-memberlist.gossip-to-dead-nodes-time` and `-memberlist.dead-node-reclaim-time` options to control how memberlist library handles dead nodes and name reuse. #2131
 * [BUGFIX] Alertmanager: fixed panic upon applying a new config, caused by duplicate metrics registration in the `NewPipelineBuilder` function. #211
-* [BUGFIX] Experimental TSDB: fixed `/all_user_stats` and `/api/prom/user_stats` endpoints when using the experimental TSDB blocks storage. #2042
-* [BUGFIX] Experimental TSDB: fixed ruler to correctly work with the experimental TSDB blocks storage. #2101
 * [BUGFIX] Azure Blob ChunkStore: Fixed issue causing `invalid chunk checksum` errors. #2074
 * [BUGFIX] The gauge `cortex_overrides_last_reload_successful` is now only exported by components that use a `RuntimeConfigManager`. Previously, for components that do not initialize a `RuntimeConfigManager` (such as the compactor) the gauge was initialized with 0 (indicating error state) and then never updated, resulting in a false-negative permanent error state. #2092
 * [BUGFIX] Fixed WAL metric names, added the `cortex_` prefix.
 * [BUGFIX] Restored histogram `cortex_configs_request_duration_seconds` #2138
 * [BUGFIX] Fix wrong syntax for `url` in config-file-reference. #2148
 * [BUGFIX] Fixed some 5xx status code returned by the query-frontend when they should actually be 4xx. #2122
+* [BUGFIX] Experimental TSDB: fixed `/all_user_stats` and `/api/prom/user_stats` endpoints when using the experimental TSDB blocks storage. #2042
+* [BUGFIX] Experimental TSDB: fixed ruler to correctly work with the experimental TSDB blocks storage. #2101
 
 ### Changes to denormalised tokens in the ring