[ https://issues.apache.org/jira/browse/HADOOP-9559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mostafa Elhemali updated HADOOP-9559: ------------------------------------- Fix Version/s: 3.0.0 Assignee: (was: Mostafa Elhemali) Status: Patch Available (was: Open) > When metrics system is restarted MBean names get incorrectly flagged as dupes > ----------------------------------------------------------------------------- > > Key: HADOOP-9559 > URL: https://issues.apache.org/jira/browse/HADOOP-9559 > Project: Hadoop Common > Issue Type: Bug > Reporter: Mostafa Elhemali > Fix For: 3.0.0 > > Attachments: HADOOP-9559.patch > > > In the Metrics2 system, every source gets registered as an MBean name, which > gets put into a unique name pool in the singleton DefaultMetricsSystem > object. The problem is that when the metrics system is shutdown (which > unregisters the MBeans) this unique name pool is left as is, so if the > metrics system is started again every attempt to register the same MBean > names fails (exception is eaten and a warning is logged). > I think the fix here is to remove the name from the unique name pool if an > MBean is unregistered, since it's OK at this point to add it again. -- 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