[MAPREDUCE-6570] logs in MRAppMasterShutdownHook can not be output, beacuse Hook of Tasklog will be called to shutdown LogManager previously

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.5.0, 2.6.0, 2.7.0
• Component/s: applicationmaster
• Hadoop Flags: Reviewed
• Assignee: lachisis
• Reporter: lachisis
• Created: 11/Dec/15 09:27
• Updated: 18/Dec/15 08:03

Description

priority of MRAppMasterShutdownHook is 30, while priority of TaskLogHook is 50.
when a applicationMaster received a signal to shutdown, actually TaskLogHook will be called first. Then when MRAppMasterShutdownHook be called next, no logs can be output.