[STORM-3527] Container.getWorkerUser() should check if the user name is empty

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.2.0
• Labels: pull-request-available
• Assignee: Ethan Li
• Reporter: Ethan Li
• Created: 22/Oct/19 20:01
• Updated: 25/Oct/19 13:40
• Resolved: 25/Oct/19 13:39

Description

Sometimes supervisor got terminated/died during writing username to workers-users file. And when it happens, the file could be empty. And when supervisor recovers after, it wouldn't be able to get the correct username because the workers-users file is present but empty. So supervisor would never be able to clean up this worker and you could see in supervisor log file:

2019-10-21 18:26:48.272 o.a.s.u.LocalState timer [WARN] LocalState file '/home/y/var/storm/workers/a9290217-f83f-4c16-ac54-781aca150d7f/heartbeats/1571508791911' contained no data, resetting state
2019-10-21 18:26:49.282 o.a.s.u.LocalState timer [WARN] LocalState file '/home/y/var/storm/workers/94967b6b-c666-4020-9d2c-363551d1229b/heartbeats/1571508791904' contained no data, resetting state
2019-10-21 18:26:49.282 o.a.s.u.LocalState timer [WARN] LocalState file '/home/y/var/storm/workers/5aa891f0-9b9c-4914-8745-c55e99537ba1/heartbeats/1569158099433' contained no data, resetting state
2019-10-21 18:26:49.283 o.a.s.u.LocalState timer [WARN] LocalState file '/home/y/var/storm/workers/060056f4-9589-4473-b6d0-9ab5fdc278e2/heartbeats/1561524903510' contained no data, resetting state
2019-10-21 18:26:49.283 o.a.s.u.LocalState timer [WARN] LocalState file '/home/y/var/storm/workers/bb189497-eb21-48c4-ba62-48ee02acde94/heartbeats/1571508791741' contained no data, resetting state

Issue Links

• links to: GitHub Pull Request #3149