hadoop - ハイブは常に 0% で削減します

Question

ハイブを使用してデータを分析する テーブルを作成し、ハイブで hiveql を実行するときにローカル ファイルをハイブにロードする

select sum(qlog_test.contlength) from qlog_test where qlog_test.area='HK' limit 10; マップでスタック 100% 0% 削減

2012-12-08 21:39:28,349 Stage-1 map = 80%, reduce = 0%, Cumulative CPU 29.72 sec 2012-12-08 21:39:29,370 Stage-1 map = 80%, reduce = 0%, Cumulative CPU 29.72 sec 2012-12-08 21:39:30,385 Stage-1 map = 80%, reduce = 0%, Cumulative CPU 29.72 sec 2012-12-08 21:39:31,401 Stage-1 map = 80%, reduce = 0%, Cumulative CPU 29.72 sec 2012-12-08 21:39:32,413 Stage-1 map = 80%, reduce = 0%, Cumulative CPU 29.72 sec 2012-12-08 21:39:33,423 Stage-1 map = 80%, reduce = 0%, Cumulative CPU 29.72 sec 2012-12-08 21:39:34,434 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:35,445 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:36,455 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:37,466 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:38,485 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:39,503 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:40,515 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:41,526 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:42,536 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:43,551 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:44,561 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:45,570 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:46,580 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:47,589 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:48,603 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:49,619 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:50,632 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:51,647 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:52,661 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:53,675 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:54,686 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:55,698 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:56,710 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:57,720 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:58,732 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:39:59,747 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:00,758 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:01,768 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:02,777 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:03,786 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:04,795 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:05,804 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:06,815 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:07,828 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:08,840 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:09,854 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec 2012-12-08 21:40:10,867 Stage-1 map = 100%, reduce = 0%, Cumulative CPU 35.89 sec これは私の Hadoop ノードの詳細です

これは map/reduce ジョブの詳細です

Answer 1

この問題がありました。レデューサーのログを確認してください。スクリーンショットを参照して、reduce 行の 1 をクリックし、すべてのデータをログに記録しているファイルを追跡します。次に、[すべて] をクリックして、問題の原因を調べます。私が抱えていた問題は、IP の構成ミスがあったため、マッパーとリデューサーが通信できなかったことです。システムを再起動すると役に立ちました。質問を編集して、削減ログの内容を含めてください。さらにお手伝いできるかもしれません。