[Mondrian] ChooseByVolume=true and integer overflow

Luc Boudreau lucboudreau at gmail.com
Tue Oct 11 11:20:22 EDT 2016


Yes, please log a new case.

Thanks Jeff!

On Tue, Oct 11, 2016 at 8:57 AM, Wright, Jeff <
jeff.s.wright at truvenhealth.com> wrote:

> For aggregate table selection by volume, we’re seeing that it’s pretty
> easy to get wrong behavior due to integer overflow. For example, if you
> have an aggregate table with 40M rows, and a row width of 600 bytes, the
> volume is 2.4B which is > max int. See getVolume() in
> mondrian.rolap.aggmatcher.AggStar, also getSize() and getRowCount().
>
>
>
> I found http://jira.pentaho.com/browse/MONDRIAN-1920 which describes a
> problem with ChooseByVolume for Mondrian 4. Sounds like our issue is
> different? Do you think the overflow deserves its own JIRA?
>
>
>
> --Jeff Wright
>
>
>
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>
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