Tag: file access

Hadoop map-reduce操作在写入输出时失败

我终于能够在Hadoop上启动map-reduce工作（在单个debian机器上运行）。 但是，map reduce作业总是失败，并出现以下错误： hadoopmachine@debian:~$ ./hadoop-1.0.1/bin/hadoop jar hadooptest/main.jar nl.mydomain.hadoop.debian.test.Main /user/hadoopmachine/input /user/hadoopmachine/output Warning: $HADOOP_HOME is deprecated. 12/04/03 07:29:35 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same. ****hdfs://localhost:9000/user/hadoopmachine/input 12/04/03 07:29:35 INFO input.FileInputFormat: Total input paths to process : 1 12/04/03 07:29:35 INFO mapred.JobClient: Running job: job_201204030722_0002 12/04/03 07:29:36 INFO mapred.JobClient: map […]