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https://issues.apache.org/jira/browse/HADOOP-1954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269030#comment-13269030
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Nikhil Mulley commented on HADOOP-1954:
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My approach to this would be to have a script which knows what are the current
task trackers online and connected currently to the JobTracker, should be
issued an RPC command, to get restarted. That ways, I can restart all my
tasktrackers in my cluster restarted from a single host/place(i.e.,. where the
jobtracker is running upon).
Here is the thing, I would propose:
have another script named 'mapred-cluster.sh' with the following options.
mapred-cluster.sh [jobtracker|tasktracker] [options]
jobtracker start|stop|restart # this would restart only the
jobtracker component of the cluster
tasktracker [-h comma seperated hostnames|ipaddress|all]
start|stop|restart # this should based on the argument value provided by -h
option, should initiate the action as noted by start|stop|restart. If -h option
is not provided, assume it is the localhost. If 'all' is provided as an
argument value to the option -h, then it should initiate a (batch?) restart of
all the tasktrackers connected to the jobtracker.
Let me know how does it sound to guys. Anyone willing to code a patch/hookup a
jar for this? :-)
Nikhil
> start task tracker and stop task tracker scripts
> ------------------------------------------------
>
> Key: HADOOP-1954
> URL: https://issues.apache.org/jira/browse/HADOOP-1954
> Project: Hadoop Common
> Issue Type: New Feature
> Components: scripts
> Reporter: Kate Rhodes
> Priority: Trivial
> Attachments: start_stop_tt_scripts.patch
>
>
> we should have scripts for starting and stopping just the task tracker
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