Remove uses of ImmutableOpen*Map #86239
Description
After #84735, hppc usage in Elasticsearch is now isolated to ImmutableOpenMap and ImmutableOpenIntMap. This is a meta issue delineating the remaining uses of those classes that need to be removed.
- ImmutableOpenIntMap (Remove ImmutableOpenIntMap #86447)
- server
- o.e.Version (Remove ImmutableOpen*Map from Version #86245)
- o.e.action.admin.indices.shards (Convert IndicesShardStoreResponse to use Map #86281)
- o.e.cluster.metadata.IndexMetadata (Use HashMap for IndexMetadata.inSyncAllocationIds #86403)
- o.e.cluster.routing.IndexRoutingTable (Remove use of ImmutableOpenIntMap in IndexRoutingTable #86368)
- server tests
- o.e.action.admin.indices.shards (Convert IndicesShardStoreResponse to use Map #86281)
- o.e.cluster.health (Remove ImmutableOpenIntMap from ClusterStateHealthTests #86306)
- server integ tests
- o.e.action.admin.indices.shards (Convert IndicesShardStoreResponse to use Map #86281)
- o.e.cluster.routing (Remove use of ImmutableOpenIntMap in IndexRoutingTable #86368)
- server
- ImmutableOpenMap exposed by public methods
- o.e.action.admin.indices (Use Map in indices responses #87292)
- o.e.cluster.ClusterState (Convert cluster state "customs" to Map #87265)
- other o.e.cluster (Convert o.e.cluster to use Map in public methods #87168)
- general ImmutableOpenMap usages
- server tests (Remove ImmutableOpenMap from some server tests #89864, Further changes to remove ImmutableOpenMap from server tests #89939)
- server integ tests
- test framework
- xpack core
- data streams
- autoscaling
- ccr
- deprecation
- enrich
- ilm tests
- ML
- QL
- rollup
- searchable snapshots
- security
- node shutdown
- transforms
- watcher