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HBase >> mail # user >> Re: Checking major compaction


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kiran 2012-10-18, 06:33
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Ramkrishna.S.Vasudevan 2012-10-18, 08:34
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Ramkrishna.S.Vasudevan 2012-10-18, 09:25
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kiran 2012-10-18, 06:12
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Ramkrishna.S.Vasudevan 2012-10-18, 06:25
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Re: Checking major compaction
Hi all,

I mistakenly execution major compaction on the entire table instead of
region by region. It is causing so much delay in the write performance,
also on the disk and networkI/O. How can i stop major compaction now ?

Thanks
Kiran

On Thu, Oct 18, 2012 at 2:55 PM, Ramkrishna.S.Vasudevan <
[EMAIL PROTECTED]> wrote:

> >A simple test would be to just right some 10 rows
> I meant to say write some 10 rows.(not right)
>
> Regards
> Ram
>
> > -----Original Message-----
> > From: Ramkrishna.S.Vasudevan [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, October 18, 2012 2:05 PM
> > To: [EMAIL PROTECTED]
> > Subject: RE: Checking major compaction
> >
> > Hi
> >
> > Yes Kiran you can go thro the logs also.
> >
> > You will see some logs like
> > 'Start major compaction for ..............
> > 'Compacting file  ................
> > 'Compacting file ................
> > And finally 'Completed major/minor compaction.....'
> >
> > I just don have some exact logs with me right now.  But you can see log
> > msgs
> > but all comes in debug mode.  So ensure you enable debug mode for your
> > logs.
> >
> > A simple test would be to just right some 10 rows. In between do some 4
> > to 5
> > flushes.
> >
> > Just give major_compact(tableName) from the shell.   You can see the
> > logs.
> > :)
> >
> > Regards
> > Ram
> >
> > > -----Original Message-----
> > > From: kiran [mailto:[EMAIL PROTECTED]]
> > > Sent: Thursday, October 18, 2012 12:03 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Checking major compaction
> > >
> > > Thanks ram,
> > >
> > > Is there a way can I check it through region server logs. If it is
> > > possible
> > > what are the statements that I need to look for ??
> > >
> > > Thanks
> > > Kiran
> > >
> > > On Thu, Oct 18, 2012 at 11:55 AM, Ramkrishna.S.Vasudevan <
> > > [EMAIL PROTECTED]> wrote:
> > >
> > > > HBASE-6033 does the work that you ask for.  It is currently in
> > Trunk
> > > > version
> > > > of HBase.
> > > >
> > > > Regards
> > > > Ram
> > > >
> > > > > -----Original Message-----
> > > > > From: kiran [mailto:[EMAIL PROTECTED]]
> > > > > Sent: Thursday, October 18, 2012 11:43 AM
> > > > > To: [EMAIL PROTECTED]
> > > > > Subject: Checking major compaction
> > > > >
> > > > > Hi all,
> > > > >
> > > > > Is there a way to check if major compaction is running or not on
> > a
> > > > > table.
> > > > >
> > > > > --
> > > > > Thank you
> > > > > Kiran Sarvabhotla
> > > > >
> > > > > -----Even a correct decision is wrong when it is taken late
> > > >
> > > >
> > >
> > >
> > > --
> > > Thank you
> > > Kiran Sarvabhotla
> > >
> > > -----Even a correct decision is wrong when it is taken late
>
>
--
Thank you
Kiran Sarvabhotla

-----Even a correct decision is wrong when it is taken late
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Kevin Odell 2012-10-19, 15:46
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kiran 2012-10-19, 16:10
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Jean-Daniel Cryans 2012-10-19, 16:11