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Steve Loughran commented on YARN-2744: -------------------------------------- stopping the yarn services ought to be done in a finally clause; {{ServiceOperations.stopQuietly()}} can aid this > Under some scenario, it is possible to end up with capacity scheduler > configuration that uses labels that no longer exist > ------------------------------------------------------------------------------------------------------------------------- > > Key: YARN-2744 > URL: https://issues.apache.org/jira/browse/YARN-2744 > Project: Hadoop YARN > Issue Type: Sub-task > Components: capacityscheduler > Affects Versions: 2.5.1 > Reporter: Sumit Mohanty > Assignee: Wangda Tan > Priority: Critical > Fix For: 2.6.0 > > Attachments: YARN-2744-20141025-1.patch > > > Use the following steps: > * Ensure default in-memory storage is configured for labels > * Define some labels and assign nodes to labels (e.g. define two labels and > assign both labels to the host on a one host cluster) > * Invoke refreshQueues > * Modify capacity scheduler to create two top level queues and allow access > to the labels from both the queues > * Assign appropriate "label + queue" specific capacities > * Restart resource manager > Noticed that RM starts without any issues. The labels are not preserved > across restart and thus the capacity-scheduler ends up using labels that are > no longer present. > At this point submitting an application to YARN will not succeed as there are > no resources available with the labels. -- This message was sent by Atlassian JIRA (v6.3.4#6332)