You might be suffering from HADOOP-7822; I'd suggest you verify your pid files and fix the problem by hand if it is the same issue.
-Rahul On Fri, Dec 16, 2011 at 2:40 PM, Joey Krabacher <[email protected]>wrote: > Turns out my tasktrackers(on the datanodes) are not starting properly.... > > so I guess they are taking some alternate route?? > > because they are up and running...even though when I run > stop-mapred.sh it says "data01: no tasktracker to stop" > > --Joey > > On Thu, Dec 15, 2011 at 5:37 PM, James Warren > <[email protected]> wrote: > > (moving to mapreduce-user@, bcc'ing common-user@) > > > > Hi Joey - > > > > You'll want to change the value on all of your servers running > tasktrackers > > and then restart each tasktracker to reread the configuration. > > > > cheers, > > -James > > > > On Thu, Dec 15, 2011 at 3:30 PM, Joey Krabacher <[email protected] > >wrote: > > > >> I have looked up how to up this value on the web and have tried all > >> suggestions to no avail. > >> > >> Any help would be great. > >> > >> Here is some background: > >> > >> Version: 0.20.2, r911707 > >> Compiled: Fri Feb 19 08:07:34 UTC 2010 by chrisdo > >> > >> Nodes: 5 > >> Current Map Task Capacity : 10 <--- this is what I want to increase. > >> > >> What I have tried : > >> > >> Adding > >> <property> > >> <name>mapred.tasktracker.map.tasks.maximum</name> > >> <value>8</value> > >> <final>true</final> > >> </property> > >> to mapred-site.xml on NameNode. I also added this to one of the > >> datanodes for the hell of it and that didn't work either. > >> > >> Thanks. > >> >
