[ https://issues.apache.org/jira/browse/MAPREDUCE-2261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved MAPREDUCE-2261. ------------------------------------ Resolution: Invalid > Fair Multiple Task Assignment Scheduler (Assigning multiple tasks per heart > beat) > --------------------------------------------------------------------------------- > > Key: MAPREDUCE-2261 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-2261 > Project: Hadoop Map/Reduce > Issue Type: New Feature > Affects Versions: 0.21.0 > Reporter: Devaraj K > > Functionality wise the Fair Multiple Task Assignment Scheduler behaves > the same way except the assignment of Tasks. Instead of assigning a single > Task per heartbeat, it checks for all the jobs if any local or non-local Task > that can be launched. > Fair Multiple Task Assignment Scheduler has the advantage of assigning > multiple jobs per heart beat interval depending upon the slots available on > the Task Tracker, by configuring the number of parallel tasks to be executed > in a Task Tracker at any point of time. The advantages are as follows: > a) Parallel Execution allows tasks be to submitted and processed in parallel > independent of the status of other tasks. > b) More number of tasks is assigned in a heartbeat interval and consequently > multitasking capability increases. > c) With multi task assignment, Task Tracker efficiency is increased. -- This message is automatically generated by JIRA. - For more information on JIRA, see: http://www.atlassian.com/software/jira