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Posted to common-issues@hadoop.apache.org by "Nikhil Mulley (JIRA)" <ji...@apache.org> on 2012/05/05 20:29:50 UTC
[jira] [Commented] (HADOOP-1954) start task tracker and stop task
tracker scripts
[ https://issues.apache.org/jira/browse/HADOOP-1954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269030#comment-13269030 ]
Nikhil Mulley commented on HADOOP-1954:
---------------------------------------
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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