我在一个小文件(3-4 MB)上执行一个map任务,但是map输出相对较大(150 MB).显示地图100%后,需要很长时间才能完成泄漏.请建议我如何缩短这段时间.以下是一些示例日志......
13/07/10 17:45:31 INFO mapred.MapTask: Starting flush of map output
13/07/10 17:45:32 INFO mapred.JobClient: map 98% reduce 0%
13/07/10 17:45:34 INFO mapred.LocalJobRunner:
13/07/10 17:45:35 INFO mapred.JobClient: map 100% reduce 0%
13/07/10 17:45:37 INFO mapred.LocalJobRunner:
13/07/10 17:45:40 INFO mapred.LocalJobRunner:
13/07/10 17:45:43 INFO mapred.LocalJobRunner:
13/07/10 17:45:46 INFO mapred.LocalJobRunner:
13/07/10 17:45:49 INFO mapred.LocalJobRunner:
13/07/10 17:45:52 INFO mapred.LocalJobRunner:
13/07/10 17:45:55 INFO mapred.LocalJobRunner:
13/07/10 17:45:58 INFO mapred.LocalJobRunner:
13/07/10 17:46:01 INFO mapred.LocalJobRunner:
13/07/10 17:46:04 INFO mapred.LocalJobRunner:
13/07/10 17:46:07 INFO mapred.LocalJobRunner:
13/07/10 17:46:10 INFO mapred.LocalJobRunner: …