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From "Jean-Marc Spaggiari (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8379) bin/graceful_stop.sh does not return the balancer to original state
Date Fri, 19 Apr 2013 22:43:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13636968#comment-13636968
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Jean-Marc Spaggiari commented on HBASE-8379:
--------------------------------------------

qt. There is no need to turn off balancer if it was off before bin/graceful_stop.sh was called.
Do we have a shell command to check balancer status without updating it? balance_switch need
an argument. So we can't just get the status and disable if it's enable. And calling the shell
once to get the status and another time to disable it is not really better/faster than calling
it to disable directly, no?

qt. Can you enclose the above command in back quotes and display its return value ?
If we want to display the result, we simply need to remove the "&> /dev/null". But
it's not very beautiful. Even if we just get the "true" or "false" returned, it will alsway
be false since we disabled the balancer previously. So I'm not really sure to get what you
want to display. Can you please confirm?
                
> bin/graceful_stop.sh does not return the balancer to original state
> -------------------------------------------------------------------
>
>                 Key: HBASE-8379
>                 URL: https://issues.apache.org/jira/browse/HBASE-8379
>             Project: HBase
>          Issue Type: Bug
>          Components: scripts
>            Reporter: Nick Dimiduk
>         Attachments: HBASE-8379-v0-trunk.patch
>
>
> {{graceful_stop.sh}} starts by explicitly disabling the balancer. It should make note
of the original balancer state and then restore that state upon completion.

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