Exclude temporary indexes from reindexing

lib/gitlab/database/reindexing.rb

@@ -19,6 +19,7 @@ module Gitlab
           .where('NOT expression')
           .not_match("^#{ConcurrentReindex::TEMPORARY_INDEX_PREFIX}")
           .not_match("^#{ConcurrentReindex::REPLACED_INDEX_PREFIX}")
+          .not_match("#{ReindexConcurrently::TEMPORARY_INDEX_PATTERN}$")
       end
     end
   end

spec/lib/gitlab/database/reindexing_spec.rb

@@ -31,7 +31,7 @@ RSpec.describe Gitlab::Database::Reindexing do
 
     it 'retrieves regular indexes that are no left-overs from previous runs' do
       result = double
-      expect(Gitlab::Database::PostgresIndex).to receive_message_chain('regular.where.not_match.not_match').with(no_args).with('NOT expression').with('^tmp_reindex_').with('^old_reindex_').and_return(result)
+      expect(Gitlab::Database::PostgresIndex).to receive_message_chain('regular.where.not_match.not_match.not_match').with(no_args).with('NOT expression').with('^tmp_reindex_').with('^old_reindex_').with('\_ccnew[0-9]*$').and_return(result)
 
       expect(subject).to eq(result)
     end