Amazon EMR(Hadoop 0.20.205)を使用していますが、タスクの1つが奇妙な状態になっていることに気付きました(以下を参照)。最初の試行がまだ実行されていたにもかかわらず、2番目のタスク試行が開始されました。私の他のタスクはすべて、1回のタスク試行で終了します。原因は何でしょうか?
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| Task Attempts | Machine | Status | Progress | Start Time | Shuffle Finished | Sort Finished | Finish Time | Errors | Task Logs | Counters | Actions |
|--------------------------------------+-----------------------------+---------+----------+----------------------+-------------------------------------+-----------------------------+-------------+--------+-----------+----------+---------|
| | | | 66.69% | | | | | | Last 4KB | | |
| attempt_201209121354_0021_r_000017_0 | /default-rack/xxx... | RUNNING | | 13-Sep-2012 13:10:28 | 13-Sep-2012 13:16:48 (6mins, 19sec) | 13-Sep-2012 13:16:58 (9sec) | | | Last 8KB | 0 | |
| | | | +------+ | | | | | | All | | |
| | | | +------+ | | | | | | | | |
|--------------------------------------+-----------------------------+---------+----------+----------------------+-------------------------------------+-----------------------------+-------------+--------+-----------+----------+---------|
| | | | 66.69% | | | | | | Last 4KB | | |
| attempt_201209121354_0021_r_000017_1 | /default-rack/xxx... | RUNNING | | 13-Sep-2012 13:14:55 | 13-Sep-2012 13:18:58 (4mins, 3sec) | 13-Sep-2012 13:19:00 (2sec) | | | Last 8KB | 0 | |
| | | | +------+ | | | | | | All | | |
| | | | +------+ | | | | | | | | |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+