Geo: Remove counts for geo_event_log

We don't really need this data too much, at the same time it's hard
to calculate. So let's just get rid of this data.

ee/app/models/geo_node_status.rb

@@ -14,6 +14,7 @@ class GeoNodeStatus < ApplicationRecord
   attr_accessor :repository_verification_enabled
 
   # Prometheus metrics, no need to store them in the database
+  # :event_log_count is deprecated and will be removed in 12.0
   attr_accessor :event_log_count, :event_log_max_id,
                 :repository_created_max_id, :repository_updated_max_id,
                 :repository_deleted_max_id, :repository_renamed_max_id, :repositories_changed_max_id,
@@ -70,7 +71,6 @@ class GeoNodeStatus < ApplicationRecord
     cursor_last_event_timestamp: 'Time of the event log processed by the secondary',
     last_successful_status_check_timestamp: 'Time when Geo node status was updated internally',
     status_message: 'Summary of health status',
-    event_log_count: 'Number of entries in the Geo event log',
     event_log_max_id: 'Highest ID present in the Geo event log',
     repository_created_max_id: 'Highest ID present in repositories created',
     repository_updated_max_id: 'Highest ID present in repositories updated',
@@ -166,7 +166,6 @@ class GeoNodeStatus < ApplicationRecord
     self.version = Gitlab::VERSION
     self.revision = Gitlab.revision
 
-    self.event_log_count = Geo::EventLog.count
     # Geo::PruneEventLogWorker might remove old events, so log maximum id
     self.event_log_max_id = Geo::EventLog.maximum(:id)
     self.repository_created_max_id = Geo::RepositoryCreatedEvent.maximum(:id)

ee/changelogs/unreleased/11280-geo-find-select-count-and-remove-it-if-we-don-t-need-it-geo.yml

+---
+title: 'Geo: Remove counts over geo_event_log table'
+merge_request: 12146
+author:
+type: fixed

ee/spec/requests/api/geo_spec.rb

@@ -273,7 +273,6 @@ describe API::Geo do
         last_event_date: Time.now.utc,
         cursor_last_event_id: 1,
         cursor_last_event_date: Time.now.utc,
-        event_log_count: 55,
         event_log_max_id: 555,
         repository_created_max_id: 43,
         repository_updated_max_id: 132,

ee/spec/services/geo/metrics_update_service_spec.rb

@@ -36,7 +36,6 @@ describe Geo::MetricsUpdateService, :geo, :prometheus do
       last_event_date: event_date,
       cursor_last_event_id: 1,
       cursor_last_event_date: event_date,
-      event_log_count: 55,
       event_log_max_id: 555,
       repository_created_max_id: 43,
       repository_updated_max_id: 132,
@@ -60,7 +59,6 @@ describe Geo::MetricsUpdateService, :geo, :prometheus do
       attachments_count: 30,
       last_event_id: 2,
       last_event_date: event_date,
-      event_log_count: 55,
       event_log_max_id: 555
     }
   end
@@ -176,7 +174,6 @@ describe Geo::MetricsUpdateService, :geo, :prometheus do
         expect(metric_value(:geo_cursor_last_event_id)).to eq(1)
         expect(metric_value(:geo_cursor_last_event_timestamp)).to eq(event_date.to_i)
         expect(metric_value(:geo_last_successful_status_check_timestamp)).to be_truthy
-        expect(metric_value(:geo_event_log)).to eq(55)
         expect(metric_value(:geo_event_log_max_id)).to eq(555)
         expect(metric_value(:geo_repository_created_max_id)).to eq(43)
         expect(metric_value(:geo_repository_updated_max_id)).to eq(132)