JobTracker should not expand jobs if its running low on memory
--------------------------------------------------------------
Key: HADOOP-5013
URL: https://issues.apache.org/jira/browse/HADOOP-5013
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Affects Versions: 0.21.0
Reporter: Amar Kamat
Fix For: 0.21.0
When the JobTracker detects that its running low on memory it should not expand
new jobs if the job has the potential to bring it down. Consider and example
where the JobTracker runs on 60% of the max memory and a new job is submitted
which can take upto 40% of the max memory. Ideally the JobTracker should
_queue_ the job for expansion and expand when sufficient memory is available.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
