[ https://issues.apache.org/jira/browse/YARN-3091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wangda Tan updated YARN-3091: ----------------------------- Issue Type: Task (was: Improvement) > [Umbrella] Improve and fix locks of RM scheduler > ------------------------------------------------ > > Key: YARN-3091 > URL: https://issues.apache.org/jira/browse/YARN-3091 > Project: Hadoop YARN > Issue Type: Task > Components: capacityscheduler, fairscheduler, resourcemanager, > scheduler > Reporter: Wangda Tan > > In existing YARN RM scheduler, there're some issues of using locks. For > example: > - Many unnecessary synchronized locks, we have seen several cases recently > that too frequent access of scheduler makes scheduler hang. Which could be > addressed by using read/write lock. Components include scheduler, CS queues, > apps > - Some fields not properly locked (Like clusterResource) > We can address them together in this ticket. > (More details see comments below) -- This message was sent by Atlassian JIRA (v6.3.4#6332)