Add partial index on id to ci_job_artifacts

Add a specialized index to make the lookup fast
to fixing bad data on the database.

db/migrate/20200403184110_add_partial_index_on_id_to_ci_job_artifacts.rb

+# frozen_string_literal: true
+
+class AddPartialIndexOnIdToCiJobArtifacts < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_ci_job_artifacts_file_store_is_null'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :ci_job_artifacts, :id, where: 'file_store IS NULL', name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :ci_job_artifacts, INDEX_NAME
+  end
+end

db/migrate/20200403185127_add_partial_index_on_id_to_lfs_objects.rb

+# frozen_string_literal: true
+
+class AddPartialIndexOnIdToLfsObjects < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_lfs_objects_file_store_is_null'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :lfs_objects, :id, where: 'file_store IS NULL', name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :lfs_objects, INDEX_NAME
+  end
+end

db/migrate/20200403185422_add_partial_index_on_id_to_uploads.rb

+# frozen_string_literal: true
+
+class AddPartialIndexOnIdToUploads < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_uploads_store_is_null'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :uploads, :id, where: 'store IS NULL', name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :uploads, INDEX_NAME
+  end
+end

db/structure.sql

@@ -8710,6 +8710,8 @@ CREATE INDEX index_ci_daily_report_results_on_last_pipeline_id ON public.ci_dail
 
 CREATE UNIQUE INDEX index_ci_group_variables_on_group_id_and_key ON public.ci_group_variables USING btree (group_id, key);
 
+CREATE INDEX index_ci_job_artifacts_file_store_is_null ON public.ci_job_artifacts USING btree (id) WHERE (file_store IS NULL);
+
 CREATE INDEX index_ci_job_artifacts_on_expire_at_and_job_id ON public.ci_job_artifacts USING btree (expire_at, job_id);
 
 CREATE INDEX index_ci_job_artifacts_on_file_store ON public.ci_job_artifacts USING btree (file_store);
@@ -9330,6 +9332,8 @@ CREATE UNIQUE INDEX index_lfs_file_locks_on_project_id_and_path ON public.lfs_fi
 
 CREATE INDEX index_lfs_file_locks_on_user_id ON public.lfs_file_locks USING btree (user_id);
 
+CREATE INDEX index_lfs_objects_file_store_is_null ON public.lfs_objects USING btree (id) WHERE (file_store IS NULL);
+
 CREATE INDEX index_lfs_objects_on_file_store ON public.lfs_objects USING btree (file_store);
 
 CREATE UNIQUE INDEX index_lfs_objects_on_oid ON public.lfs_objects USING btree (oid);
@@ -10096,6 +10100,8 @@ CREATE INDEX index_uploads_on_store ON public.uploads USING btree (store);
 
 CREATE INDEX index_uploads_on_uploader_and_path ON public.uploads USING btree (uploader, path);
 
+CREATE INDEX index_uploads_store_is_null ON public.uploads USING btree (id) WHERE (store IS NULL);
+
 CREATE INDEX index_user_agent_details_on_subject_id_and_subject_type ON public.user_agent_details USING btree (subject_id, subject_type);
 
 CREATE INDEX index_user_callouts_on_user_id ON public.user_callouts USING btree (user_id);
@@ -12929,5 +12935,8 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200330121000
 20200330132913
 20200331220930
+20200403184110
+20200403185127
+20200403185422
 \.