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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-756) new dfsadmin command to wait until safe mode is exited
Date Mon, 04 Dec 2006 18:34:23 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-756?page=comments#action_12455382 ] 
            
dhruba borthakur commented on HADOOP-756:
-----------------------------------------

Ok, then i will create a new dfsadmin. Currently we have a command of the following type:

bin/hadoop dfsadmin -safemode [get][set][clear]

I am going to add another option:

bin/hadoop dfsadmin -safemode [get][set][clear][wait]

The [wait] option will cause the command to block till HDFS exists safemode. Internally, the
DFSAdmin class will use a while-sleep-poll loop to wait.

> new dfsadmin command to wait until safe mode is exited
> ------------------------------------------------------
>
>                 Key: HADOOP-756
>                 URL: http://issues.apache.org/jira/browse/HADOOP-756
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.8.0
>            Reporter: Owen O'Malley
>         Assigned To: Sameer Paranjpye
>            Priority: Minor
>
> I would like to have a dfsadmin command that waits until dfs leaves safemode. I want
to be able to have my start up scripts wait until dfs is up before starting my jobtracker.

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