[ https://issues.apache.org/jira/browse/YARN-3241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhihai xu updated YARN-3241: ---------------------------- Attachment: YARN-3241.001.patch > Leading space, trailing space and empty sub queue name may cause > MetricsException for fair scheduler > ---------------------------------------------------------------------------------------------------- > > Key: YARN-3241 > URL: https://issues.apache.org/jira/browse/YARN-3241 > Project: Hadoop YARN > Issue Type: Bug > Components: scheduler > Reporter: zhihai xu > Assignee: zhihai xu > Attachments: YARN-3241.000.patch, YARN-3241.001.patch > > > Leading space, trailing space and empty sub queue name may cause > MetricsException(Metrics source XXX already exists! ) when add application to > FairScheduler. > The reason is because QueueMetrics parse the queue name different from the > QueueManager. > QueueMetrics use Q_SPLITTER to parse queue name, it will remove Leading space > and trailing space in the sub queue name, It will also remove empty sub queue > name. > {code} > static final Splitter Q_SPLITTER = > Splitter.on('.').omitEmptyStrings().trimResults(); > {code} > But QueueManager won't remove Leading space, trailing space and empty sub > queue name. > This will cause out of sync between FSQueue and FSQueueMetrics. > QueueManager will think two queue names are different so it will try to > create a new queue. > But FSQueueMetrics will treat these two queue names as same queue which will > create "Metrics source XXX already exists!" MetricsException. -- This message was sent by Atlassian JIRA (v6.3.4#6332)