[HADOOP-11989] Kill command for process group id throws ExitCodeException

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.6.0
• Component/s: util

Environment

debian 7

• Assignee: Chackaravarthy
• Reporter: Chackaravarthy
• Created: 17/May/15 20:21
• Updated: 20/Aug/15 02:02
• Resolved: 20/Aug/15 02:02

Description

In the environment where setsid available, kill command is constructed with single dash, which throws ExitCodeException (improper usage of command)

kill -signal_num -<process_group_id>

Encountered this issue due to YARN-3561

Kill command need to be constructed with double dash (--) which means "end of command options" i.e. it tells ssh command not to try to parse what comes after command line options. It should be constructed as follows :

kill -signal_num -- -<process_group_id>

Issue Links

• blocks: YARN-3561 Non-AM Containers continue to run even after AM is stopped
• is superceded by: HADOOP-12317 Applications fail on NM restart on some linux distro because NM container recovery declares AM container as LOST