Add indexes to aggregated VSA tables

This change adds DB indexes to the new, aggregated value stream
analytics tables.

Changelog: added

db/post_migrate/20211031152417_add_indexes_to_issue_stage_events.rb

+# frozen_string_literal: true
+
+class AddIndexesToIssueStageEvents < Gitlab::Database::Migration[1.0]
+  include Gitlab::Database::PartitioningMigrationHelpers
+
+  disable_ddl_transaction!
+
+  GROUP_INDEX_NAME = 'index_issue_stage_events_group_duration'
+  GROUP_IN_PROGRESS_INDEX_NAME = 'index_issue_stage_events_group_in_progress_duration'
+  PROJECT_INDEX_NAME = 'index_issue_stage_events_project_duration'
+  PROJECT_IN_PROGRESS_INDEX_NAME = 'index_issue_stage_events_project_in_progress_duration'
+
+  def up
+    add_concurrent_partitioned_index :analytics_cycle_analytics_issue_stage_events,
+      'stage_event_hash_id, group_id, end_event_timestamp, issue_id, start_event_timestamp',
+      where: 'end_event_timestamp IS NOT NULL',
+      name: GROUP_INDEX_NAME
+
+    add_concurrent_partitioned_index :analytics_cycle_analytics_issue_stage_events,
+      'stage_event_hash_id, project_id, end_event_timestamp, issue_id, start_event_timestamp',
+      where: 'end_event_timestamp IS NOT NULL',
+      name: PROJECT_INDEX_NAME
+
+    add_concurrent_partitioned_index :analytics_cycle_analytics_issue_stage_events,
+      'stage_event_hash_id, group_id, start_event_timestamp, issue_id',
+      where: 'end_event_timestamp IS NULL AND state_id = 1',
+      name: GROUP_IN_PROGRESS_INDEX_NAME
+
+    add_concurrent_partitioned_index :analytics_cycle_analytics_issue_stage_events,
+      'stage_event_hash_id, project_id, start_event_timestamp, issue_id',
+      where: 'end_event_timestamp IS NULL AND state_id = 1',
+      name: PROJECT_IN_PROGRESS_INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_issue_stage_events, GROUP_INDEX_NAME
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_issue_stage_events, PROJECT_INDEX_NAME
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_issue_stage_events, GROUP_IN_PROGRESS_INDEX_NAME
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_issue_stage_events, PROJECT_IN_PROGRESS_INDEX_NAME
+  end
+end

db/post_migrate/20211031154919_add_indexes_to_merge_request_stage_events.rb

+# frozen_string_literal: true
+
+class AddIndexesToMergeRequestStageEvents < Gitlab::Database::Migration[1.0]
+  include Gitlab::Database::PartitioningMigrationHelpers
+
+  disable_ddl_transaction!
+
+  GROUP_INDEX_NAME = 'index_merge_request_stage_events_group_duration'
+  GROUP_IN_PROGRESS_INDEX_NAME = 'index_merge_request_stage_events_group_in_progress_duration'
+  PROJECT_INDEX_NAME = 'index_merge_request_stage_events_project_duration'
+  PROJECT_IN_PROGRESS_INDEX_NAME = 'index_merge_request_stage_events_project_in_progress_duration'
+
+  def up
+    add_concurrent_partitioned_index :analytics_cycle_analytics_merge_request_stage_events,
+      'stage_event_hash_id, group_id, end_event_timestamp, merge_request_id, start_event_timestamp',
+      where: 'end_event_timestamp IS NOT NULL',
+      name: GROUP_INDEX_NAME
+
+    add_concurrent_partitioned_index :analytics_cycle_analytics_merge_request_stage_events,
+      'stage_event_hash_id, project_id, end_event_timestamp, merge_request_id, start_event_timestamp',
+      where: 'end_event_timestamp IS NOT NULL',
+      name: PROJECT_INDEX_NAME
+
+    add_concurrent_partitioned_index :analytics_cycle_analytics_merge_request_stage_events,
+      'stage_event_hash_id, group_id, start_event_timestamp, merge_request_id',
+      where: 'end_event_timestamp IS NULL AND state_id = 1',
+      name: GROUP_IN_PROGRESS_INDEX_NAME
+
+    add_concurrent_partitioned_index :analytics_cycle_analytics_merge_request_stage_events,
+      'stage_event_hash_id, project_id, start_event_timestamp, merge_request_id',
+      where: 'end_event_timestamp IS NULL AND state_id = 1',
+      name: PROJECT_IN_PROGRESS_INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_merge_request_stage_events, GROUP_INDEX_NAME
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_merge_request_stage_events, PROJECT_INDEX_NAME
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_merge_request_stage_events, GROUP_IN_PROGRESS_INDEX_NAME
+    remove_concurrent_partitioned_index_by_name :analytics_cycle_analytics_merge_request_stage_events, PROJECT_IN_PROGRESS_INDEX_NAME
+  end
+end

db/schema_migrations/20211031152417

+f46a0dd662a80d38a4e8d3e6c4db05e61563a959b75d30a4c3724ae6afc2647f
\ No newline at end of file

db/schema_migrations/20211031154919

+08399bfbf62533c00dfe3ca3434f6be292ec768f053d3b1fde41d2d68de32fe7
\ No newline at end of file