[HADOOP-15527] loop until TIMEOUT before sending kill -9

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.2.0, 3.1.1
• Target Version/s: 3.1.1
• Assignee: Vinod Kumar Vavilapalli
• Reporter: Vinod Kumar Vavilapalli
• Created: 11/Jun/18 20:29
• Updated: 19/Jun/18 18:02
• Resolved: 13/Jun/18 01:20

Description

I'm seeing that sometimes daemons keep running for a little while even after "kill -9" from daemon-stop scripts.

Debugging more, I see several instances of "ERROR: Unable to kill ${pid}".

Saw this specifically with ResourceManager & NodeManager -  yarn --daemon stop nodemanager. Though it is possible that other daemons may run into this too.

Saw this on both Centos as well as Ubuntu.

Issue Links

• duplicates: HADOOP-13837 Always get unable to kill error message even the hadoop process was successfully killed