Hadoop daemon does not clean up pid file upon normal shutdown
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Key: HADOOP-7586
URL: https://issues.apache.org/jira/browse/HADOOP-7586
Project: Hadoop Common
Issue Type: Improvement
Components: scripts
Affects Versions: 0.22.0, 0.23.0
Environment: Linux
Reporter: Joep Rottinghuis
Assignee: Joep Rottinghuis
Priority: Minor
hadoop-daemon.sh script created pid files on when namenode, jobtrackers, etc.
deamons are started.
When the deamon is stopped in a regular manner through the stop script, it
should clean up the pid file to indicate normal controlled exit.
Presence of a pid without running corresponding process would then indicated
abnormal end of the process.
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