Sandy, I think it was something that was missed in the port to YARN and the dead code was cleaned up as part of HADOOP-8288.
If you have a use case for it or are worried about backwards compatibility we can add it back in. It is not that hard, all it did was add 'ulimt -v <number>' to the shell script that launched the task, except on windows. --Bobby On 6/18/13 3:56 PM, "Sandy Ryza" <sandy.r...@cloudera.com> wrote: >Hi yarn-dev/mapreduce-dev, > >Is there a reason that mapred.child.ulimit no longer has an effect in MR2? > Should it be added back in? > >thanks for any help, >-Sandy