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HBase, mail # user - Master startup - Taking forever to complete - "Assigning META Region"


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Re: Master startup - Taking forever to complete - "Assigning META Region"
shashwat shriparv 2012-05-02, 13:10
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On Wed, May 2, 2012 at 6:28 PM, Ramkrishna.S.Vasudevan <
[EMAIL PROTECTED]> wrote:

> May be after half an hour the Timeout monitor may try to assign it. It is
> an
> internal thread that the system uses.
> But I still doubt the zookeeper data.  This problem mainly happens if the
> zookeeper node for META is still available.
>
> Regards
> Ram
>
> > -----Original Message-----
> > From: Srikanth P. Shreenivas [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, May 02, 2012 6:22 PM
> > To: [EMAIL PROTECTED]
> > Subject: Master startup - Taking forever to complete - "Assigning META
> > Region"
> >
> > We had shifted our machines from one location to another location.
> >
> > After bringing up the system,  when we started our Hadoop and HBase
> > clusters, we realized that clocks were out of sync and region servers
> > would not start up.
> > After syncing the clock, when we restarted the cluster, we are
> > observing that we get error related to .META. region not being onlne.
> >
> > When we look at web console of HBase, we observed that , under the
> > heading "Currently running tasks", we see :
> >
> > Description          Status                                        Age
> > Master startup - Assigning META region  - 341s
> >
> >
> > Any idea what could be causing this?  We tried cleaning up the
> > zookeeper data and restarted the cluster, but the issue persists.
> >
> > We are planning to leave the server running and check back after few
> > hours.  Not sure whether something got corrupted when clocks were out-
> > of-sync.
> >
> >
> > Regards,
> > Srikanth
> >
> > ________________________________
> >
> > http://www.mindtree.com/email/disclaimer.html
>
>
--

Shashwat Shriparv