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Anubhav Srivastav commented on YARN-624: ---------------------------------------- Is there any progress on implementing this feature? > Support gang scheduling in the AM RM protocol > --------------------------------------------- > > Key: YARN-624 > URL: https://issues.apache.org/jira/browse/YARN-624 > Project: Hadoop YARN > Issue Type: Sub-task > Components: api, scheduler > Affects Versions: 2.0.4-alpha > Reporter: Sandy Ryza > Assignee: Sandy Ryza > > Per discussion on YARN-392 and elsewhere, gang scheduling, in which a > scheduler runs a set of tasks when they can all be run at the same time, > would be a useful feature for YARN schedulers to support. > Currently, AMs can approximate this by holding on to containers until they > get all the ones they need. However, this lends itself to deadlocks when > different AMs are waiting on the same containers. -- This message was sent by Atlassian JIRA (v6.3.4#6332)