地图减少工作卡在地图上0%减少0%

Question

我正在运行着名的wordcount示例.我有一个本地和prod hadoop设置.同样的例子在prod工作,但它不在本地工作.有人能告诉我应该寻找什么.工作陷入困境.任务日志是:

~/tmp$ hadoop jar wordcount.jar WordCount /testhistory /outputtest/test
Warning: $HADOOP_HOME is deprecated.

13/08/29 16:12:34 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
13/08/29 16:12:35 INFO input.FileInputFormat: Total input paths to process : 3
13/08/29 16:12:35 INFO util.NativeCodeLoader: Loaded the native-hadoop library
13/08/29 16:12:35 WARN snappy.LoadSnappy: Snappy native library not loaded
13/08/29 16:12:35 INFO mapred.JobClient: Running job: job_201308291153_0015
13/08/29 16:12:36 INFO mapred.JobClient:  map 0% reduce 0%

本地hadoop以伪分布式模式运行.所有3个进程,namenode,datanode,jobtracker都在运行.如果需要一些额外信息,请告诉我.

Answer 1

任务跟踪器似乎丢失了。

尝试：

hadoop tasktracker &