mapred.userlog.retain.hours

I have chnaged on my namenode and the datanodes mapred-site.xml , to include mapred.userlog.retain.hours 2 And yet my job xml retains 24 . Am I doing anything wrong -- View this message in context: http://old.nabble.com/mapred.userlog.retain.hours-tp29298881p29298881.html Sent f

Re: Files reducing to zero byte size

lease correct if I am wrong . vishalsant wrote: > > I ran a Map Reduce job , and created using Multiple Outputs and reduced to > a bunch of files > I catted them , did a copytoLocal and all the good stuff one does. > > I come back after couple of days and those files are 0

Re: Can I submit jobs to a hadoop cluster without using hadoop executable

. if folks need to see one way. vishalsant wrote: > > I am a newbie to hadoop so please bear with me if this is naive. > > I have defined a Mapper/Reducer and I desire to run it on a hadoop cluster > My question is > > * Do I need to specify the Mapper/Reduce

Jetty Exceptions in the DataNode log related to task failure ?

Not sure , what is happening here .. in the sense that is this critical? I had read that the status of a task is passed on to the jobtracker over http. Is that true ? I see tasks killed b'coz of expiree , even though the Datanode seems to be alive and kicking ( expect for the above exception )..

Re: DataNode not able to spawn a Task

eport pbly. Will close the thread , when this is resolved with the disk issue ( which it seems to be ). vishalsant wrote: > > Hi guys, > > I see the exception below when I launch a job > > > 0/04/27 10:54:16 INFO mapred.JobClient: map 0% reduce 0% > 10/04/27 10

DataNode not able to spawn a Task

Hi guys, I see the exception below when I launch a job 0/04/27 10:54:16 INFO mapred.JobClient: map 0% reduce 0% 10/04/27 10:54:22 INFO mapred.JobClient: Task Id : attempt_201004271050_0001_m_005760_0, Status : FAILED Error initializing attempt_201004271050_0001_m_005760_0: java.lang.Numbe

Re: Can I submit jobs to a hadoop cluster without using hadoop executable

JobConf.setJar(..) might be the way , but that class is deprecated and no method in the Job has a corresponding addition. vishalsant wrote: > > I am a newbie to hadoop so please bear with me if this is naive. > > I have defined a Mapper/Reducer and I desire to run it on a hadoop

Can I submit jobs to a hadoop cluster without using hadoop executable

I am a newbie to hadoop so please bear with me if this is naive. I have defined a Mapper/Reducer and I desire to run it on a hadoop cluster My question is * Do I need to specify the Mapper/Reducer in the classpath of all my DataNodes/JobTracker Node or can they be uploaded to the cluster as mo