The Mapred framework kills the map/reduce tasks if they dont report status within 10 minutes. If your mapper/reducer needs more time they should report status using http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/mapred/Reporter.html More documentation at http://hadoop.apache.org/core/docs/current/mapred_tutorial.html#Reporter You can increase the task timeout by setting mapred.task.timeout.
Thanks Amareshwari wangxu wrote: > Hi,all > I always met this kind of error when do mapping job. > > Task task_200807130149_0067_m_000000_0 failed to report status for 604 > seconds. Killing! > > > > I am using hadoop-0.16.4-core.jar ,one namenode,one datanode. > > What does this error message suggest? Does it mean functions in mapper is too > slow? > I assume there is no network connection issue. > What can I do about this error? > > > > Thanks, > Xu > > > > >
