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Posted to user@pig.apache.org by Sarah Mohamed <sa...@gmail.com> on 2012/12/17 02:53:32 UTC
PhysicalPlan leaves
PhysicalPlan.getLeaves() return a list of leaves, Most of the cases it's
only one"the root", is there any cases that the physical plan will have
more than one leaf ?
Thanks
Sarah
Re: PhysicalPlan leaves
Posted by Sarah Mohamed <sa...@gmail.com>.
Thanks Jonathan.
The physical plan can have more than one leaf when the query contains more
than one "store" ; each "store" is considered a leave .
--
Regards,
Sarah M. Hassan
On Wed, Dec 19, 2012 at 11:29 PM, Jonathan Coveney <jc...@gmail.com>wrote:
> If you really want to be sure, what I would do is put a debug statement in
> PigServer.launchPlan and just look at the PhysicalPlan object for a
> semi-complicated script. There definitely will be forking paths, but I do
> not know the specifics well enough to say where.
>
>
> 2012/12/19 Sarah Mohamed <sa...@gmail.com>
>
> > Peace be on you, Jonathan,
> > It gives one leaf also
> >
> > --
> > Regards,
> > Sarah M. Hassan
> >
> >
> >
> > On Tue, Dec 18, 2012 at 4:24 AM, Jonathan Coveney <jcoveney@gmail.com
> > >wrote:
> >
> > > Try it with joins, I think
> > >
> > >
> > > 2012/12/16 Sarah Mohamed <sa...@gmail.com>
> > >
> > > > PhysicalPlan.getLeaves() return a list of leaves, Most of the cases
> > it's
> > > > only one"the root", is there any cases that the physical plan will
> have
> > > > more than one leaf ?
> > > >
> > > > Thanks
> > > > Sarah
> > > >
> > >
> >
>
Re: PhysicalPlan leaves
Posted by Jonathan Coveney <jc...@gmail.com>.
If you really want to be sure, what I would do is put a debug statement in
PigServer.launchPlan and just look at the PhysicalPlan object for a
semi-complicated script. There definitely will be forking paths, but I do
not know the specifics well enough to say where.
2012/12/19 Sarah Mohamed <sa...@gmail.com>
> Peace be on you, Jonathan,
> It gives one leaf also
>
> --
> Regards,
> Sarah M. Hassan
>
>
>
> On Tue, Dec 18, 2012 at 4:24 AM, Jonathan Coveney <jcoveney@gmail.com
> >wrote:
>
> > Try it with joins, I think
> >
> >
> > 2012/12/16 Sarah Mohamed <sa...@gmail.com>
> >
> > > PhysicalPlan.getLeaves() return a list of leaves, Most of the cases
> it's
> > > only one"the root", is there any cases that the physical plan will have
> > > more than one leaf ?
> > >
> > > Thanks
> > > Sarah
> > >
> >
>
Re: PhysicalPlan leaves
Posted by Sarah Mohamed <sa...@gmail.com>.
Peace be on you, Jonathan,
It gives one leaf also
--
Regards,
Sarah M. Hassan
On Tue, Dec 18, 2012 at 4:24 AM, Jonathan Coveney <jc...@gmail.com>wrote:
> Try it with joins, I think
>
>
> 2012/12/16 Sarah Mohamed <sa...@gmail.com>
>
> > PhysicalPlan.getLeaves() return a list of leaves, Most of the cases it's
> > only one"the root", is there any cases that the physical plan will have
> > more than one leaf ?
> >
> > Thanks
> > Sarah
> >
>
Re: PhysicalPlan leaves
Posted by Jonathan Coveney <jc...@gmail.com>.
Try it with joins, I think
2012/12/16 Sarah Mohamed <sa...@gmail.com>
> PhysicalPlan.getLeaves() return a list of leaves, Most of the cases it's
> only one"the root", is there any cases that the physical plan will have
> more than one leaf ?
>
> Thanks
> Sarah
>