[HADOOP-12320] discuss restart capability for services (JvmPauseMonitor, NodeManager, ResourceManager)

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Gabor Liptak
• Created: 13/Aug/15 00:48
• Updated: 16/Aug/15 23:42

Description

From https://issues.apache.org/jira/browse/HADOOP-12313?focusedCommentId=14681611&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14681611

djp

I am not sure if restart is an expectation at the beginning. But theoretically, any services should be restartable. However, just double checked with other services, like: NodeManager, ResourceManager, etc., it seems like all these services are implemented as one time only service. So I am fine with keeping things like this to conform the same pattern with other services. I will file another separated JIRA to discuss restartable issue unless someone tells me a solid reason on this.

Issue Links

• is related to: HADOOP-12313 NPE in JvmPauseMonitor when calling stop() before start()