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https://issues.apache.org/jira/browse/HADOOP-13837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Weiwei Yang updated HADOOP-13837:
---------------------------------
Description:
Reproduce steps
# Setup a hadoop cluster
# Stop resource manager : yarn --daemon stop resourcemanager
# Stop node manager : yarn
was:
Always get {{ERROR: Unable to kill ...}} after {{Trying to kill with kill -9}},
see following output of stop-yarn.sh
{code}
<NM_HOST>: WARNING: nodemanager did not stop gracefully after 5 seconds: Trying
to kill with kill -9
<NM_HOST>: ERROR: Unable to kill 18097
{code}
hadoop_stop_daemon doesn't check process liveness correctly, this bug can be
reproduced by the script easily. kill -9 would need some time to be done,
directly check process existence right after mostly will fail.
{code}
function hadoop_stop_daemon
{
...
kill -9 "${pid}" >/dev/null 2>&1
fi
if ps -p "${pid}" > /dev/null 2>&1; then
hadoop_error "ERROR: Unable to kill ${pid}"
else
...
}
{code}
> Process check bug in hadoop_stop_daemon of hadoop-functions.sh
> --------------------------------------------------------------
>
> Key: HADOOP-13837
> URL: https://issues.apache.org/jira/browse/HADOOP-13837
> Project: Hadoop Common
> Issue Type: Bug
> Components: scripts
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Attachments: HADOOP-13837.01.patch, HADOOP-13837.02.patch,
> HADOOP-13837.03.patch, HADOOP-13837.04.patch, check_proc.sh
>
>
> Reproduce steps
> # Setup a hadoop cluster
> # Stop resource manager : yarn --daemon stop resourcemanager
> # Stop node manager : yarn
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