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Vinod Kumar Vavilapalli updated YARN-45: ---------------------------------------- Summary: [Preemption] Scheduler feedback to AM to release containers (was: Scheduler feedback to AM to release containers) > [Preemption] Scheduler feedback to AM to release containers > ----------------------------------------------------------- > > Key: YARN-45 > URL: https://issues.apache.org/jira/browse/YARN-45 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager > Reporter: Chris Douglas > Assignee: Carlo Curino > Fix For: 2.1.0-beta > > Attachments: YARN-45.1.patch, YARN-45.patch, YARN-45.patch, > YARN-45.patch, YARN-45.patch, YARN-45.patch, YARN-45.patch, > YARN-45_design_thoughts.pdf > > > The ResourceManager strikes a balance between cluster utilization and strict > enforcement of resource invariants in the cluster. Individual allocations of > containers must be reclaimed- or reserved- to restore the global invariants > when cluster load shifts. In some cases, the ApplicationMaster can respond to > fluctuations in resource availability without losing the work already > completed by that task (MAPREDUCE-4584). Supplying it with this information > would be helpful for overall cluster utilization [1]. To this end, we want to > establish a protocol for the RM to ask the AM to release containers. > [1] http://research.yahoo.com/files/yl-2012-003.pdf -- This message was sent by Atlassian JIRA (v6.2#6252)