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From Chen Song <chen.song...@gmail.com>
Subject Re: Schedule major compaction programmatically
Date Thu, 17 May 2012 19:00:58 GMT
Can you direct me to the API call to get the queue size metrics?

On Thu, May 17, 2012 at 2:58 PM, Jimmy Xiang <jxiang@cloudera.com> wrote:

> It is an async call to the region server to request a compaction.  Once the
> request is accepted,
> the call returned.  There is no sync call here.  The request is queued and
> processed by a pool
> of threads.
>
> Currently, there is a metric to show the queue size.  But it doesn't tell
> how many are for major,
> and how many are for minor.  The queue size is the number of store files
> pending compact.
>
> As I know, there is no work around for now.
>
> Jimmy
>
>
> On Thu, May 17, 2012 at 11:42 AM, Chen Song <chen.song.82@gmail.com>
> wrote:
>
> > Thanks Jimmy. Meanwhile, is there a work around for this?
> >
> > How does compact/major_compact issued from hbase shell handles this under
> > the hood? Is it eventually calling HBaseAdmin API or HRegion synchronous
> > API call?
> >
> > Thanks
> > Chen
> >
> > On Thu, May 17, 2012 at 2:24 PM, Jimmy Xiang <jxiang@cloudera.com>
> wrote:
> >
> > > I am thinking to add a function to check if a table or region in
> > compaction
> > > (major or minor).
> > >
> > > I filed HBASE-6033. It won't show status of a specific compaction
> > request.
> > > Will this help?
> > >
> > > Thanks,
> > > Jimmy
> > >
> > > On Thu, May 17, 2012 at 11:11 AM, Chen Song <chen.song.82@gmail.com>
> > > wrote:
> > >
> > > > I would like to schedule major compaction on a region
> > programmatically. I
> > > > found the API call below which can properly achieve my goal.
> > > >
> > > > HBaseAdmin.majorCompact(String tableOrRegionName)
> > > >
> > > > It turns out to be an asynchronous call and there seems no call back
> > > > parameter that can be specified. How can I validate the compaction
> > result
> > > > (e.g., success or failure) ?
> > > >
> > > > Thanks
> > > > Chen
> > > >
> > >
> >
> >
> >
> > --
> > Chen Song
> > Mobile: 518-445-5096
> >
>



-- 
Chen Song
Mobile: 518-445-5096

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