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From Sebastian Kunert <skuner...@gmail.com>
Subject Re: Different Test Outcome Java 7/8
Date Mon, 01 Sep 2014 12:20:33 GMT
Hi Stephan,

I set the "filterFactor" in the CompilerHints of the mapper to 0.5, I hope
that was what you meant. Nevertheless, it seems to have no effect on the
output plan.

Sebastian


2014-09-01 13:56 GMT+02:00 Stephan Ewen <sewen@apache.org>:

> Hi!
>
> The optimizer pushes certain strategies down before the map operators. That
> is correct, but it would be good to have a bias to not do that unless it
> yields a clear advantage.
>
> For that case, the simplest fix would be to give the mapper a selectivity
> smaller than one. That should do it.
>
> Stephan
>
>
>
> On Mon, Sep 1, 2014 at 1:47 PM, Sebastian Kunert <skunert49@gmail.com>
> wrote:
>
> > Hi,
> >
> > I have different plans for the DOPChangeTest in java 7 and 8. Here are
> the
> > two plans that are generated:
> >
> > Java 7: http://pastebin.com/krzF0gmJ
> > Java 8: http://pastebin.com/a6TuBjzB
> >
> > The plans are equivalent and both okay. The question is how to deal with
> > this in a testcase when we have to expect a specific plan. The problem
> > arises in this pull request:
> > https://github.com/apache/incubator-flink/pull/83
> >
> > Sebastian
> >
>

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