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Al Thompson commented on YARN-1398: ----------------------------------- Slight fixup on bug title > Deadlock in capacity scheduler leaf queue and parent queue for getQueueInfo > and completedContainer call > ------------------------------------------------------------------------------------------------------- > > Key: YARN-1398 > URL: https://issues.apache.org/jira/browse/YARN-1398 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager > Affects Versions: 2.2.0 > Reporter: Sunil G > Assignee: Vinod Kumar Vavilapalli > Priority: Blocker > Fix For: 2.4.0 > > Attachments: YARN-1398-20140220.txt > > > getQueueInfo in parentQueue will call child.getQueueInfo(). > This will try acquire the leaf queue lock over parent queue lock. > Now at same time if a completedContainer call comes and acquired LeafQueue > lock and it will wait for ParentQueue's completedConatiner call. > This lock usage is not in synchronous and can lead to deadlock. > With JCarder, this is showing as a potential deadlock scenario. -- This message was sent by Atlassian JIRA (v6.1.5#6160)