[ https://issues.apache.org/jira/browse/YARN-809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Karthik Kambatla reassigned YARN-809: ------------------------------------- Assignee: Karthik Kambatla (was: Sandy Ryza) > Enable better parallelism in the Fair Scheduler > ----------------------------------------------- > > Key: YARN-809 > URL: https://issues.apache.org/jira/browse/YARN-809 > Project: Hadoop YARN > Issue Type: Improvement > Reporter: Sandy Ryza > Assignee: Karthik Kambatla > > Currently, the Fair Scheduler is locked on pretty much every operation, node > updates, application additions and removals, every time the update thread > runs, and every time the RM queries it for information. Most of this locking > is unnecessary, especially as only the core scheduling operations like > application additions, removals, and node updates need a consistent view of > scheduler state. > We can probably increase parallelism by using concurrent data structures when > applicable, as well as keeping a slightly stale view to serve via the RM > APIs. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira