Set compactor memory limits (#11970)

CHANGELOG.md

@@ -57,6 +57,7 @@
 * [11499](https://github.com/grafana/loki/pull/11284) **jmichalek132** Config: Adds `frontend.log-query-request-headers` to enable logging of request headers in query logs.
 * [11817](https://github.com/grafana/loki/pull/11817) **ashwanthgoli** Ruler: Add support for filtering results of `/prometheus/api/v1/rules` endpoint by rule_name, rule_group, file and type.
 * [11897](https://github.com/grafana/loki/pull/11897) **ashwanthgoli** Metadata: Introduces a separate split interval of `split_recent_metadata_queries_by_interval` for `recent_metadata_query_window` to help with caching recent metadata query results.
+* [11970](https://github.com/grafana/loki/pull/11897) **masslessparticle** Ksonnet: Introduces memory limits to the compactor configuration to avoid unbounded memory usage.
 
 ##### Fixes
 * [11074](https://github.com/grafana/loki/pull/11074) **hainenber** Fix panic in lambda-promtail due to mishandling of empty DROP_LABELS env var.

production/ksonnet/loki/shipper.libsonnet

@@ -62,6 +62,7 @@
     container.mixin.readinessProbe.httpGet.withPort($._config.http_listen_port) +
     container.mixin.readinessProbe.withTimeoutSeconds(1) +
     k.util.resourcesRequests('4', '2Gi') +
+    k.util.resourcesLimits(null, '4Gi') +
     container.withEnvMixin($._config.commonEnvs)
   else {},