{"action":"created","comment":{"url":"https://api.github.com/repos/alphagov/whitehall/pulls/comments/29436721","id":29436721,"diff_hunk":"@@ -18,26 +22,39 @@\n   Whitehall.searchable_classes_for_government_index\n end\n \n-logger.info \"Counting docs to index...\"\n-counts_by_class = classes_to_index.each_with_object({}) do |klass, hash|\n-  count = klass.searchable_instances.count\n-  logger.info(\"%20s: %d\" % [klass.name, count])\n-  hash[klass] = count\n+id_groups = []\n+classes_to_index.each do |klass|\n+  id_groups += klass.searchable_instances.pluck(:id).each_slice(1_000).map do |id_group|\n+    [klass, id_group]\n+  end\n end\n \n-total_count = counts_by_class.values.inject(&:+)\n+def export_classes(classes_to_index, id_groups, &block)\n+  if export_directory = ENV[\"EXPORT_DIRECTORY\"]\n+    export_directory = Pathname.new(export_directory).expand_path\n+    export_directory.mkpath","path":"script/rummager_export.rb","position":35,"original_position":35,"commit_id":"56e993f16109c82f6509f256b0d14c0586c09937","original_commit_id":"56e993f16109c82f6509f256b0d14c0586c09937","user":{"login":"rboulton","id":73564,"avatar_url":"https://avatars.githubusercontent.com/u/73564?v=3","gravatar_id":"","url":"https://api.github.com/users/rboulton","html_url":"https://github.com/rboulton","followers_url":"https://api.github.com/users/rboulton/followers","following_url":"https://api.github.com/users/rboulton/following{/other_user}","gists_url":"https://api.github.com/users/rboulton/gists{/gist_id}","starred_url":"https://api.github.com/users/rboulton/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rboulton/subscriptions","organizations_url":"https://api.github.com/users/rboulton/orgs","repos_url":"https://api.github.com/users/rboulton/repos","events_url":"https://api.github.com/users/rboulton/events{/privacy}","received_events_url":"https://api.github.com/users/rboulton/received_events","type":"User","site_admin":false},"body":"Will this error if the directory already exists?\r\nIf not, we probably want it to, so we don't end up overwriting existing data / getting mixed old and new data.","created_at":"2015-04-30T14:59:32Z","updated_at":"2015-04-30T14:59:32Z","html_url":"https://github.com/alphagov/whitehall/pull/2123#discussion_r29436721","pull_request_url":"https://api.github.com/repos/alphagov/whitehall/pulls/2123","_links":{"self":{"href":"https://api.github.com/repos/alphagov/whitehall/pulls/comments/29436721"},"html":{"href":"https://github.com/alphagov/whitehall/pull/2123#discussion_r29436721"},"pull_request":{"href":"https://api.github.com/repos/alphagov/whitehall/pulls/2123"}}},"pull_request":{"url":"https://api.github.com/repos/alphagov/whitehall/pulls/2123","id":34467163,"html_url":"https://github.com/alphagov/whitehall/pull/2123","diff_url":"https://github.com/alphagov/whitehall/pull/2123.diff","patch_url":"https://github.com/alphagov/whitehall/pull/2123.patch","issue_url":"https://api.github.com/repos/alphagov/whitehall/issues/2123","number":2123,"state":"open","locked":false,"title":"Add a parallel option to the rummager 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than\r\n`STDOUT`, and splits the dump process into multiple\r\nsub-processes (one per CPU/core), generating\r\nmultiple files in the process.\r\n\r\nThese can be `cat`'d together when fed into\r\nrummager, or imported one at a 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