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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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kiran 2012-10-19, 15:37
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Kevin Odell 2012-10-19, 15:46
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Re: Checking major compaction
kiran 2012-10-19, 16:10
Kevin,

Thanks for your reply,

can restarting region servers help to kill the already existing compaction
processes in region servers..

Thanks
Kiran

On Fri, Oct 19, 2012 at 9:16 PM, Kevin O'dell <[EMAIL PROTECTED]>wrote:

> Kiran,
>
>   I don't believe you can.   If you have a sane region count/region size it
> should be over soon.
>
> On Fri, Oct 19, 2012 at 11:37 AM, kiran <[EMAIL PROTECTED]>
> wrote:
>
> > 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
> >
>
>
>
> --
> Kevin O'Dell
> Customer Operations Engineer, Cloudera
>

--
Thank you
Kiran Sarvabhotla

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