Hi Harsh, Thanks for the diagnosis.
I'm trying to execute some files already present on the OS. I tried to copy some files into the working directory for the mapred user "/tmp" to use for execution, but don't even have permissions for that. I tried using sudo but get "org.apache.hadoop.util.Shell$ExitCodeException: sudo: no tty present and no askpass program specified" since I'm using a java executed process within the mapper. Is there a way to give the mapred user root permissions? Cheers, Joris On Thu, Sep 8, 2011 at 11:09 PM, Harsh J <ha...@cloudera.com> wrote: > Hello Joris! > > What types of files are you trying to execute or modify? Distributed > cache files? Your own files? Files already present on the OS? > > If its distributed cache stuff, or your own creations/etc., one thing > you can try it to set "keep.failed.task.files" to "true" for your job > and fail a task. Then head down to its specific TT's mapred.local.dir > directory and see what the permissions of your distributed files look > like? > > For the rest, can you ensure if simple tests (for permissions, etc.) like: > > $ sudo -u mapred <command you need to run via a task> > > Passes or not? > > On Fri, Sep 9, 2011 at 5:28 AM, Joris Poort <gpo...@gmail.com> wrote: >> Hi, >> >> I'm trying to set permissions for the tasktracker and/or mapred user. >> Basically I'm trying to execute and modify files from within the >> mapper, but the code errors out stating that the mapred user on the >> slave node doesn't have the right permissions to modify/execute files. >> >> Any help or tips on this would be greatly appreciated! >> >> Cheers, >> >> Joris >> > > > > -- > Harsh J >
