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Date: Thu, 17 May 2012 12:03:42 -0700
Message-ID: 
 <CAOmV22skWWopKxirh85PWNYMDK5FzFqUZAysgB_pOC30ftQN2A@mail.gmail.com>
Subject: Re: Schedule major compaction programmatically
From: Jimmy Xiang <jxiang@cloudera.com>
To: user@hbase.apache.org
Cc: hbase-user@hadoop.apache.org
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HRegionServer.java:

    this.metrics.compactionQueueSize.set(compactSplitThread
        .getCompactionQueueSize());

On Thu, May 17, 2012 at 12:00 PM, Chen Song <chen.song.82@gmail.com> wrote:

> 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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