我开始使用hadoop一周了。在成功运行示例之后,我使用了WordCuce示例来查找最常用的单词。
我尝试使用500 MB或数据来运行此作业。
然而,地图任务需要数小时。它目前在地图上67%减少0%。
地图任务日志如下所示:
2014-10-24 11:19:52,274 DEBUG [IPC Parameter Sending Thread #0] org.apache.hadoop.ipc.Client: IPC Client (592959754) connection to /xxx.xx.xx.xx:52026 from job_1414134493988_0001 sending #2554
2014-10-24 11:19:52,278 DEBUG [IPC Client (592959754) connection to /xxx.xx.xx.xx:52026 from job_1414134493988_0001] org.apache.hadoop.ipc.Client: IPC Client (592959754) connection to /xxx.xx.xx.xx:52026 from job_1414134493988_0001 got value #2554
2014-10-24 11:19:52,279 DEBUG [communication thread] org.apache.hadoop.ipc.RPC: Call: ping 5
2014-10-24 11:19:55,279 DEBUG [IPC Parameter Sending Thread #0] org.apache.hadoop.ipc.Client: IPC Client (592959754) connection to /xxx.xx.xx.xx:52026 from job_1414134493988_0001 sending #2555
2014-10-24 11:19:55,280 DEBUG [IPC Client (592959754) connection to /xxx.xx.xx.xx:52026 from job_1414134493988_0001] org.apache.hadoop.ipc.Client: IPC Client (592959754) connection to /xxx.xx.xx.xx:52026 from job_1414134493988_0001 got value #2555
2014-10-24 11:19:55,280 DEBUG [communication thread] org.apache.hadoop.ipc.RPC: Call: ping 1
这是假设发生的,需要那么长时间吗?
答案 0 :(得分:0)
一些提示: