在Ubuntu中,当我运行hadoop示例时:
$bin/hadoop jar hadoop-examples-1.0.4.jar grep input output 'dfs[a-z.]+'
$echo $HADOOP_HEAPSIZE
2000
在日志中,我收到错误:
INFO mapred.JobClient:任务ID:attempt_201303251213_0012_m_000000_2,状态:FAILED 错误:Java堆空间 13/03/25 15:03:43 INFO mapred.JobClient:任务ID:attempt_201303251213_0012_m_000001_2,状态:FAILED错误:Java堆空间13/03/25 15:04:28 INFO mapred.JobClient:作业失败:失败的地图任务数超过了允许的限制.FailedCount:1.LastFailedTask:task_201303251213_0012_m_000000 java.io.IOException:作业失败!org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1265)org.apache.hadoop.examples.Grep.run(Grep.java:69)atg.apache.hadoop.util.ToolRunner.run (ToolRunner.java:65)org.apache.hadoop.examples.Grep.main(Grep.java:93)
让我们知道问题是什么.
hadoop ×1